[PLAY-1724] Dark Mode - Map Audit

[gabbymassaro]

What does this PR do? A clear and concise description with your runway ticket url.
PLAY-1724

This PR is a part of the Dark Mode Audit on 'Map'.
We've updated the pop up content, it should display a dark background and white text.
Light mode was also impacted to create this change, the functionality remains the same.

Screenshots: Screenshots to visualize your addition/change

How to test? Steps to confirm the desired behavior:

1. Go to playbook.powerapp.cloud/kits/map/react
2. Enable 'dark mode'
3. Check each map
4. Click on the location icon on the map --> all pop up content should have a dark background and white text
5. Enable 'light mode', make sure the pop up content behaves the same way as production

Checklist:

• LABELS Add a label: enhancement, bug, improvement, new kit, deprecated, or breaking. See Changelog & Labels for details.
• DEPLOY I have added the milano label to show I'm ready for a review.
• TESTS I have added test coverage to my code.

[kangaree]

Makes sense. Good work!

An aside- I wonder if we should move this file to playbook-website/app/javascript/site_styles. I'm not sure this warrants its own folder "map_styles". Or maybe we could change the directory to "kit_styles".

[nidaqg]

🚀 Awesome work @gabbymassaro !