E2E spec for Closing web ide with unsaved changes throws alert

What does this MR do and why?

Issue: #410101 (closed) - This was a issue reported by a user, where the unsaved changes alert was not appearing and the user lost all his data while closing the web ide unexpectedly.

1. Unsaved changes alert appears while trying to close the WebIDE with unsaved changes

• Create a project with readme
• Go to vscode webide
• Right click and add new file
• Now try to close the webide
• Confirm that there a alert when trying to close the webide with unsaved file

Screenshots or screen recordings

Screen_Recording_2023-06-13_at_5.02.18_AM

How to set up and validate locally

run:

bundle exec bin/qa Test::Instance::All http://gdk.test:3000/ ./qa/specs/features/browser_ui/3_create/web_ide/closing_web_ide_with_unsaved_changes_spec.rb

MR acceptance checklist

• Confirm the test has a testcase: tag linking to an existing test case in the test case project.
• Note if the test is intended to run in specific scenarios. If a scenario is new, add a link to the MR that adds the new scenario.
• Follow the end-to-end tests style guide and best practices.
• Use the appropriate RSpec metadata tag(s).
• Most resources will be cleaned up via the general cleanup task. Check that is successful, or ensure resources are cleaned up in the test:
  • New resources have api_get_path and api_delete_path implemented if possible.
  • If any resource cannot be deleted in the general delete task, make sure it is ignored.
  • If any resource cannot be deleted in the general delete task, remove it in the test (e.g., in an after block).
• Ensure that no transient bugs are hidden accidentally due to the usage of waits and reloads.
• Verify the tags to ensure it runs on the desired test environments.
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