fix: Update for fix (appsmithorg#38035)

## Description
> [!TIP]  
> _Add a TL;DR when the description is longer than 500 words or
extremely technical (helps the content, marketing, and DevRel team)._
>
> _Please also include relevant motivation and context. List any
dependencies that are required for this change. Add links to Notion,
Figma or any other documents that might be relevant to the PR._


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.IDE"

### 🔍 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/12230287831>
> Commit: 11ad63e
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=12230287831&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.IDE`
> Spec:
> <hr>Mon, 09 Dec 2024 07:11:58 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 error handling in API tests by refining test logic for
invalid header values.
- Ensured correct validation of error messages during API calls with
modified inputs.

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

cypress/e2e/Regression/ClientSide/BugTests/DS_Bug26941_Spec.ts

@@ -12,7 +12,7 @@ describe(
     it("1. Checking whether the appropriate error is displayed even after the removal of invalid chars in header key.", function () {
       const randomApi = `${
         dataManager.dsValues[dataManager.defaultEnviorment].mockApiUrl
-      }123`;
+      }`;
       apiPage.CreateAndFillApi(randomApi);
       apiPage.RunAPI(false, 2000, {
         expectedPath: "response.body.data.body.data.isExecutionSuccess",