Fix starlight RGB animation to observe rgb on/off state & indicators

[plodah]

Description

3 animations named "starlight" don't initialize properly, run while RGB is disabled and do not display indicators.
Inidicator issue similar to #21792, affecting the jellybean raindrops animation.

set_starlight_color() function does not check an led's flags, which appears to explain why effect remains on while RGB is off.
the animations also return false after updating each LED, so indicator check does not run.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[drashna]

Can confirm this fixes the issues with it respecting the flag settings.

[plodah]

Sorry drashna- re-request review was a mis-click

[github-actions]

Thank you for your contribution!
This pull request has been automatically marked as stale because it has not had activity in the last 45 days. It will be closed in 30 days if no further activity occurs. Please feel free to give a status update now, or re-open when it's ready.
For maintainers: Please label with bug, awaiting review, breaking_change, in progress, or on hold to prevent the issue from being re-flagged.