[Page Header] New page header for notebooks and UI updates

[TackAdam]

Description

1. New page header for notebooks and UI updates
2. Updates some of the cypress testing (Following PR to finish)
3. Bugfix for applications(one line change to handle mode not selected on entry)
4. Disable Query assist flaky test
5. Add back gettingstartedID to plugin.tsx

New Navigation before:

New navigation after:

Old Navigation before:

After changes:

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.

[TackAdam]

Icon size adjusted to match reporting.

[TackAdam]

Fixed eui call out for upgrade to span full page