Added validation post fork app for one of the RBAC test
EE PR: https://github.com/appsmithorg/appsmith-ee/pull/4689
/ok-to-test tags="@tag.All"
<!-- This is an auto-generated comment: Cypress test results -->
> [!TIP]
> 🟢🟢🟢 All cypress tests have passed! 🎉🎉🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/9875287311>
> Commit: e70666d24fe5ed382827c28246752e7ee060b0e6
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=9875287311&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.All`
> Spec:
> <hr>Wed, 10 Jul 2024 14:38:50 UTC
<!-- end of auto-generated comment: Cypress test results -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Improved user experience by ensuring the page waits until the fork
modal disappears after clicking the "Fork" button.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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