Components: Restore Non-Themed Text Colors for optimizeReadabilityFor

[im3dabasia]

Follow up: #68349
Related comment: #68349 (comment)

What?

Reverted to using non-theme-based CSS values when the optimizeReadabilityFor prop is used, aligning with its intended functionality.

Why?

The optimizeReadabilityFor prop takes a static background color as input. To ensure consistent readability, the corresponding text colors must remain as non-themed values.

How?

Reverted the specific changes to optimizeReadabilityFor introduced in PR #68349

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Co-authored-by: im3dabasia <[email protected]>
Co-authored-by: mirka <[email protected]>

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[im3dabasia]

Hi @mirka,
When you have a moment, could you please review my PR? It addresses this: #68349 (comment).

[mirka]

Looks good, thanks for the quick revert! Could you also add a changelog, and revert the unit test changes as well so they pass again?

[im3dabasia]

Thank you for the review, @mirka. 🙇

I’ve updated the CHANGELOG with the following text. Please let me know if you have any feedback or suggestions for improvement:

• Heading: Revert text contrast fix for dark mode with optimizeReadabilityFor (#68472).
• Text: Revert text contrast fix for dark mode with optimizeReadabilityFor (#68472).

[mirka]

Thanks!