Content Resizing: Focus Accept button when suggested content generation completes

[Infinite-Null]

What?

Ensures focus moves directly to the Accept button in the Content Resizing modal once suggested content generation finishes, rather than defaulting focus to any focusable elements (such as links) rendered in the "Original" content section.

Why?

If the original block text contains focusable HTML elements (e.g., hyperlinks), modal updates cause focus to land on those elements in the "Original" section.

Use of AI Tools

AI assistance: Yes
Tool(s): Claude Code
Model(s): Claude Sonnet 4.6
Used for: Validating bug, suggesting a fix.

Testing Instructions

Below is the video demonstrating the testing instructions.

Screen.Recording.2026-08-06.at.5.37.12.PM.mov

Screenshots or screencast

Before:

Screen.Recording.2026-08-06.at.5.40.05.PM.mov

After

Screen.Recording.2026-08-06.at.5.40.42.PM.mov

Changelog Entry

Fixed - Ensure focus moves to the Accept button when suggested content generation completes in the Content Resizing modal.

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

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Co-authored-by: Infinite-Null <ankitkumarshah@git.wordpress.org>
Co-authored-by: jeffpaul <jeffpaul@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 74.42%. Comparing base (78128ba) to head (074f1dd).

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #917   +/-   ##
==========================================
  Coverage      74.42%   74.42%           
  Complexity      3116     3116           
==========================================
  Files            132      132           
  Lines          12179    12179           
==========================================
  Hits            9064     9064           
  Misses          3115     3115           

Flag	Coverage Δ
unit	74.42% <ø> (ø)

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[jeffpaul]

Tests well via Playground, will await @dkotter's review before merging

[dkotter]

Works fine but left a few minor comments.

Also would be nice to update our existing E2E test to ensure the right button is focused after generation, to ensure this issue doesn't come back (and likely something we've missed in our other E2E tests and focus fixes)

[Infinite-Null]

Thanks for the feedback! I’ve reworked the changes. Could you please review the updated changes when you get a chance. Thank you.

cc: @jeffpaul @dkotter