[Feature] UI update to notebooks and applications

[TackAdam]

Description

1. Update Badge counter in the new navigation for notebooks and applications(adjustment to the breadcrumb)
2. Change Notebook delete functionality to remove single button popover
3. Update Testing

Before	After

Notebooks delete before:

After:

https://github.com/user-attachments/assets/6e374bef-9a55-45b1-80d3-f28f8e43ca63

Issues Resolved

Check List

• [ ] New functionality includes testing.
  • [ ] All tests pass, including unit test, integration test and doctest
• [ ] New functionality has been documented.
  • [ ] New functionality has javadoc added
  • [ ] New functionality has user manual doc added
• [ ] Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.