Modify Playwright test to account for changes in JupyterLab UI.

[marcelovilla]

Reference Issues or PRs

Fixes #2205

What does this implement/fix?

Put a x in the boxes that apply

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

• Did you test the pull request locally?
• Did you add new tests?

Any other comments?

[viniciusdc]

Summary of changes:

• Removed JupyterHub Notebook Tests from .github/workflows/test_local_integration.yaml
• Updates to Playwright test due to recent changes in UI from migration to Jhub app (replacing Jupyterhub)
• Updates to get_jupyterhub_token to extend _xsrf cookies persistence over proxied requests (aka check for cookies and headers)

for extra ref. see attached issue and latest comment by @marcelovilla #2205 (comment)

[viniciusdc]

LGTM, thanks @marcelovilla for getting the tests green again! 🚀

[marcelovilla]

Thank you for your review @viniciusdc!

@aktech would like to get your input on the XSRF token issue and see if matches the way you solved it locally or if there is anything I might be missing.

[aktech]

Great work @marcelovilla 🎉