refactor: optimize getBaseProps with for-in loop and startsWith

[TrevorBurnham]

Description

This PR applies two micro-optimizations to getBaseProps:

• Replace Object.keys().forEach() with for-in loop
• Replace regex match with String.prototype.startsWith()

My benchmarks show a ~2.5x performance improvement. This function is called on every component render, so small optimizations here add up.

How has this been tested?

Existing tests provide extensive coverage for this functionality.

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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[georgylobko]

@TrevorBurnham could you share your benchmark results?

[TrevorBurnham]

@TrevorBurnham could you share your benchmark results?

Sure, I've shared a benchmark script and results here: https://gist.github.com/TrevorBurnham/4645e6cdddac26bad32d98971d359ddb

[georgylobko]

@TrevorBurnham thanks for sharing. LGTM!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.17%. Comparing base (b9b1274) to head (c9ef3d6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4203   +/-   ##
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  Coverage   97.17%   97.17%           
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  Files         882      882           
  Lines       25826    25826           
  Branches     9331     9331           
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  Hits        25097    25097           
  Misses        723      723           
  Partials        6        6           

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