Updating usePolling to cleanup after unmount

[sejli]

Description

• A simpler fix that achieves the same thing as Lifting useLoadTableColumnsToCache out of Flyouts #1586
• When the component that initializes usePolling() unmounts before stopPolling() is called, it causes the setInterval to become a zombie process in the background. Updated the hook such that we check if unmounted before exiting the startPolling() function and clear if true.
• Updated UI for empty state
• Allow failed cache state to start reloading

Issues Resolved

N/A

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.

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 57.77%. Comparing base (2bc9c17) to head (e2abfe3).

Files	Patch %	Lines
...nage/associated_objects/associated_objects_tab.tsx	80.00%	2 Missing ⚠️
public/components/hooks/use_polling.ts	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1598      +/-   ##
==========================================
+ Coverage   57.76%   57.77%   +0.01%     
==========================================
  Files         367      367              
  Lines       13808    13819      +11     
  Branches     3621     3627       +6     
==========================================
+ Hits         7976     7984       +8     
- Misses       5769     5772       +3     
  Partials       63       63              

Flag	Coverage Δ
dashboards-observability	57.77% <75.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.