fix: flag color in new reviewer

[RobozinhoD]

Purpose / Description

Describe the problem or feature and motivation

the new reviewer "Flag.NONE" icon had a different color because it wasn't using the new property drawableReviewerRes introduced in #17434

Screenshot of the issue

Approach

I solved the TODO of Flag.kt and used colorControlNormal everywhere.

How Has This Been Tested?

Screenshots

Checklist

Please, go through these checks before submitting the PR.

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[mikehardy]

🤔 seems right

[david-allison]

Looks good, custom names are maintained