wip: Button tooltip for disabled reason and loading text (same color treatment)

[timogasda]

Description

Related links, issue #, if available: n/a

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 95.38%. Comparing base (8f69458) to head (3ef2cbf). Report is 375 commits behind head on main.

Files with missing lines	Patch %	Lines
src/button/internal.tsx	77.77%	4 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2256      +/-   ##
==========================================
- Coverage   95.40%   95.38%   -0.03%     
==========================================
  Files         704      705       +1     
  Lines       18714    18729      +15     
  Branches     5945     6276     +331     
==========================================
+ Hits        17855    17864       +9     
- Misses        852      858       +6     
  Partials        7        7              

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.