wip: Button tooltip for disabled reason and loading text

[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?

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 71.42857% with 4 lines in your changes missing coverage. Please review.

Project coverage is 95.38%. Comparing base (8f69458) to head (60d96e0). Report is 375 commits behind head on main.

Files with missing lines	Patch %	Lines
src/button/internal.tsx	66.66%	4 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2255      +/-   ##
==========================================
- Coverage   95.40%   95.38%   -0.03%     
==========================================
  Files         704      705       +1     
  Lines       18714    18724      +10     
  Branches     5945     5948       +3     
==========================================
+ Hits        17855    17860       +5     
- Misses        852      857       +5     
  Partials        7        7              

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