chore: Add code-split for Git integration for packages (#39166)

## Description
EE counterpart: appsmithorg/appsmith-ee#6032


Fixes #`Issue Number`  
_or_  
Fixes `Issue URL`
> [!WARNING]  
> _If no issue exists, please create an issue first, and check with the
maintainers if the issue is valid._

## Automation

/ok-to-test tags="@tag.ImportExport, @tag.Git"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/13520092700>
> Commit: 57eb731
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=13520092700&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.ImportExport, @tag.Git`
> Spec:
> <hr>Tue, 25 Feb 2025 12:14:10 UTC
<!-- end of auto-generated comment: Cypress test results  -->


## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Bug Fixes**
- Improved Git integration when discarding changes by adding extra
validation and enhanced error reporting. These enhancements ensure that
modifications are handled more reliably, resulting in a smoother and
more consistent experience for users.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/server/appsmith-server/src/main/java/com/appsmith/server/git/central/CentralGitServiceCEImpl.java

@@ -2259,7 +2259,7 @@ protected Mono<? extends Artifact> discardChanges(Artifact branchedArtifact, Git
                                     .flatMap(artifactExchangeJson -> importService.importArtifactInWorkspaceFromGit(
                                             workspaceId, branchedArtifact.getId(), artifactExchangeJson, branchName))
                                     .flatMap(artifactFromLastCommit ->
-                                            gitArtifactHelper.publishArtifact(artifactFromLastCommit, true))
+                                            gitArtifactHelper.validateAndPublishArtifact(artifactFromLastCommit, true))
                                     .flatMap(publishedArtifact -> gitAnalyticsUtils.addAnalyticsForGitOperation(
                                             AnalyticsEvents.GIT_DISCARD_CHANGES, publishedArtifact, null))
                                     .onErrorResume(exception -> {

app/server/appsmith-server/src/test/utils/com/appsmith/server/git/GitApplicationTestUtils.java

@@ -0,0 +1,53 @@
+package com.appsmith.server.git;
+
+import com.appsmith.external.constants.PluginConstants;
+import com.appsmith.external.models.ActionConfiguration;
+import com.appsmith.external.models.ActionDTO;
+import com.appsmith.external.models.Datasource;
+import com.appsmith.external.models.PluginType;
+import com.appsmith.server.domains.Application;
+import com.appsmith.server.domains.Artifact;
+import com.appsmith.server.domains.Plugin;
+import com.appsmith.server.plugins.base.PluginService;
+import com.appsmith.server.services.LayoutActionService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpMethod;
+import org.springframework.stereotype.Component;
+import reactor.core.publisher.Mono;
+
+import java.util.UUID;
+
+@Component
+public class GitApplicationTestUtils implements GitArtifactTestUtils<Application> {
+
+    @Autowired
+    LayoutActionService layoutActionService;
+    @Autowired
+    PluginService pluginService;
+
+
+    @Override
+    public Mono<Void> createADiff(Artifact artifact) {
+
+        Application application = (Application) artifact;
+        String pageId = application.getPages().get(0).getId();
+        Plugin plugin = pluginService.findByPackageName("restapi-plugin").block();
+
+        Datasource datasource = new Datasource();
+        datasource.setName(PluginConstants.DEFAULT_REST_DATASOURCE);
+        datasource.setWorkspaceId(application.getWorkspaceId());
+        datasource.setPluginId(plugin.getId());
+
+        ActionDTO action = new ActionDTO();
+        action.setPluginType(PluginType.API);
+        action.setName("aGetAction_" + UUID.randomUUID());
+        action.setDatasource(datasource);
+        action.setActionConfiguration(new ActionConfiguration());
+        action.getActionConfiguration().setHttpMethod(HttpMethod.GET);
+        action.setPageId(pageId);
+
+        return layoutActionService
+            .createSingleAction(action, Boolean.FALSE)
+            .then();
+    }
+}

app/server/appsmith-server/src/test/utils/com/appsmith/server/git/GitArtifactTestUtils.java

@@ -1,52 +1,8 @@
 package com.appsmith.server.git;
 
-import com.appsmith.external.constants.PluginConstants;
-import com.appsmith.external.models.ActionConfiguration;
-import com.appsmith.external.models.ActionDTO;
-import com.appsmith.external.models.Datasource;
-import com.appsmith.external.models.PluginType;
-import com.appsmith.server.domains.Application;
 import com.appsmith.server.domains.Artifact;
-import com.appsmith.server.domains.Plugin;
-import com.appsmith.server.plugins.base.PluginService;
-import com.appsmith.server.services.LayoutActionService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpMethod;
-import org.springframework.stereotype.Component;
 import reactor.core.publisher.Mono;
 
-import java.util.UUID;
-
-@Component
-public class GitArtifactTestUtils<T extends Artifact> {
-
-    @Autowired
-    LayoutActionService layoutActionService;
-    @Autowired
-    PluginService pluginService;
-
-    Mono<Void> createADiff(Artifact artifact) {
-
-        Application application = (Application) artifact;
-
-        String pageId = application.getPages().get(0).getId();
-        Plugin plugin = pluginService.findByPackageName("restapi-plugin").block();
-
-        Datasource datasource = new Datasource();
-        datasource.setName(PluginConstants.DEFAULT_REST_DATASOURCE);
-        datasource.setWorkspaceId(application.getWorkspaceId());
-        datasource.setPluginId(plugin.getId());
-
-        ActionDTO action = new ActionDTO();
-        action.setPluginType(PluginType.API);
-        action.setName("aGetAction_" + UUID.randomUUID());
-        action.setDatasource(datasource);
-        action.setActionConfiguration(new ActionConfiguration());
-        action.getActionConfiguration().setHttpMethod(HttpMethod.GET);
-        action.setPageId(pageId);
-
-        return layoutActionService
-            .createSingleAction(action, Boolean.FALSE)
-            .then();
-    }
+public interface GitArtifactTestUtils<T extends Artifact> {
+    Mono<Void> createADiff(Artifact artifact);
 }

app/server/appsmith-server/src/test/utils/com/appsmith/server/git/GitTestUtils.java

@@ -1,27 +1,13 @@
 package com.appsmith.server.git;
 
-import com.appsmith.server.constants.ArtifactType;
+
 import com.appsmith.server.domains.Application;
-import com.appsmith.server.domains.Artifact;
-import lombok.RequiredArgsConstructor;
+import com.appsmith.server.git.ce.GitTestUtilsCE;
 import org.springframework.stereotype.Component;
-import reactor.core.publisher.Mono;
 
-@RequiredArgsConstructor
 @Component
-public class GitTestUtils {
-
-    private final GitArtifactTestUtils<Application> gitApplicationTestUtils;
-
-    private GitArtifactTestUtils<?> getArtifactSpecificUtils(ArtifactType artifactType) {
-        // TODO For now just work with apps
-        return gitApplicationTestUtils;
-    }
-
-
-    public Mono<Void> createADiffInArtifact(Artifact artifact) {
-        GitArtifactTestUtils<?> artifactSpecificUtils = getArtifactSpecificUtils(artifact.getArtifactType());
-
-        return artifactSpecificUtils.createADiff(artifact);
+public class GitTestUtils extends GitTestUtilsCE {
+    public GitTestUtils(GitArtifactTestUtils<Application> gitApplicationTestUtils) {
+        super(gitApplicationTestUtils);
     }
 }

app/server/appsmith-server/src/test/utils/com/appsmith/server/git/ce/GitTestUtilsCE.java

@@ -0,0 +1,26 @@
+package com.appsmith.server.git.ce;
+
+import com.appsmith.server.constants.ArtifactType;
+import com.appsmith.server.domains.Application;
+import com.appsmith.server.domains.Artifact;
+import com.appsmith.server.git.GitArtifactTestUtils;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import reactor.core.publisher.Mono;
+
+@RequiredArgsConstructor
+@Component
+public class GitTestUtilsCE {
+
+    private final GitArtifactTestUtils<Application> gitApplicationTestUtils;
+    protected GitArtifactTestUtils<?> getArtifactSpecificUtils(ArtifactType artifactType) {
+        return gitApplicationTestUtils;
+    }
+
+
+    public Mono<Void> createADiffInArtifact(Artifact artifact) {
+        GitArtifactTestUtils<?> artifactSpecificUtils = getArtifactSpecificUtils(artifact.getArtifactType());
+
+        return artifactSpecificUtils.createADiff(artifact);
+    }
+}