Fix: Focus loss when button goes to disabled state

[hbhalodia]

What?

Part of - #589

Why?

• PR is necessary to add the focus so there is no focus lost when button is in disabled state

How?

• PR adds the prop accessibleWhenDisabled prop so the focus does not lost while button goes to disabled mode

Use of AI Tools

• None

Testing Instructions

1. Check the button added for experiments, For summarization, title generation and suggestion experiments.
2. The focus should not be lost

Screenshots or screencast

Before	After

Changelog Entry

Fixed - Fix focus lost when button goes to disabled state.

[github-actions]

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Co-authored-by: hbhalodia <hbhalodia@git.wordpress.org>
Co-authored-by: yogeshbhutkar <yogeshbhutkar@git.wordpress.org>
Co-authored-by: dkotter <dkotter@git.wordpress.org>

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.00%. Comparing base (3624c91) to head (55b874f).
⚠️ Report is 10 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop     #608      +/-   ##
=============================================
+ Coverage      73.18%   74.00%   +0.82%     
- Complexity      1731     1738       +7     
=============================================
  Files             85       85              
  Lines           7473     7490      +17     
=============================================
+ Hits            5469     5543      +74     
+ Misses          2004     1947      -57     

Flag	Coverage Δ
unit	74.00% <ø> (+0.82%)	⬆️

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[yogeshbhutkar]

LGTM 🌻