Revert "always disable spotless task execution if target is empty"

This reverts commit bf22eb1.

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/SpotlessExtensionImpl.java

@@ -71,10 +71,10 @@ protected void createFormatTasks(String name, FormatExtension formatExtension) {
 				formatExtension.setupTask(task);
 				if (ideHookPath != null) {
 					var ideHookFile = project.file(ideHookPath);
+					task.setEnabled(task.getTarget().contains(ideHookFile));
 					var newTarget = task.getTarget().filter(ideHookFile::equals);
 					task.setTarget(newTarget);
 				}
-				task.setEnabled(!task.getTarget().isEmpty());
 			});
 		});