fix: Allows table cells be expandable and editable at the same time

[pan-kot]

Description

The PR makes it possible to have cell editing in the first column of tables with expandable rows.

Rel: [tNAkA40KWyvj], AWSUI-43194.

How has this been tested?

• New unit and integration test
• Screenshot tests
• Dry-run to live

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]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.45%. Comparing base (89ffd99) to head (b41676b).
Report is 25 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3205      +/-   ##
==========================================
+ Coverage   96.42%   96.45%   +0.03%     
==========================================
  Files         787      791       +4     
  Lines       22190    22310     +120     
  Branches     7206     7255      +49     
==========================================
+ Hits        21396    21520     +124     
+ Misses        787      783       -4     
  Partials        7        7              

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[pan-kot]

@gethinwebster, I added a small refactoring on top, removing the onMouseEnter/onMouseExit handlers from the cell. Apologies for not creating a separate commit for that!

The reason the handlers are removed is the following:

1. After the original change, the handlers were used to set the hover state used as a condition to render the success icon;
2. The success icon renders if either hover or focus is present;
3. The focus is always present after the field is submitted, so the hover dependency is not actually needed.