fix: Adding pageId check to fix private JS object deletion flow on package editor (#30687)

## Description

Adding pageId check to fix private JS object deletion flow on package
editor

#### PR fixes following issue(s)
Fixes # (issue number)

#### Type of change
- Bug fix (non-breaking change which fixes an issue)

## Testing

#### How Has This Been Tested?
- [x] Manual
- [ ] JUnit
- [ ] Jest
- [x] Cypress

## Checklist:
#### Dev activity
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag


#### QA activity:
- [ ] [Speedbreak
features](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#speedbreakers-)
have been covered
- [ ] Test plan covers all impacted features and [areas of
interest](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#areas-of-interest-)
- [ ] Test plan has been peer reviewed by project stakeholders and other
QA members
- [ ] Manually tested functionality on DP
- [ ] We had an implementation alignment call with stakeholders post QA
Round 2
- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed


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

## Summary by CodeRabbit

- **Refactor**
- Improved the logic for deleting JavaScript collections to
conditionally update and save layout, enhancing user experience by
ensuring relevant updates are made only when necessary.

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

app/client/src/ce/sagas/JSActionSagas.ts

@@ -346,7 +346,7 @@ export function* deleteJSCollectionSaga(
       );
       if (isPagePaneSegmentsEnabled) {
         yield call(handleDeleteRedirect, id);
-      } else {
+      } else if (pageId) {
         history.push(builderURL({ pageId }));
       }
       yield put(removeFocusHistoryRequest(currentUrl));
@@ -364,13 +364,16 @@ export function* deleteJSCollectionSaga(
       yield put(deleteJSCollectionSuccess({ id }));
 
       const widgets: CanvasWidgetsReduxState = yield select(getWidgets);
-      yield put(
-        updateAndSaveLayout(widgets, {
-          shouldReplay: false,
-          isRetry: false,
-          updatedWidgetIds: [],
-        }),
-      );
+
+      if (pageId) {
+        yield put(
+          updateAndSaveLayout(widgets, {
+            shouldReplay: false,
+            isRetry: false,
+            updatedWidgetIds: [],
+          }),
+        );
+      }
     }
   } catch (error) {
     yield put(deleteJSCollectionError({ id: actionPayload.payload.id }));