feat: support for setting map color schema

[jokerttu]

• Adds a new mapColorScheme view property to allow controlling the map’s light and dark modes.
• Fixes night-mode handling on iOS, including the ability to reset night mode back to automatic.
• Deprecates the setNightMode method and moves night-mode handling to the navigationNightMode view property.

Closes #499

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation
• I added new tests to check the change I am making
• All existing and new tests are passing.

[illuminati1911]

LGTM. Tested on iOS and found no issues.