Save theme by user

[wendevlin]

Proposed change

• Backwards compatible theme by user setting in Profile
• Migrated depricated mql.addListener to mql.addEventListener
• add switch theme animation for supported browsers (not Firefox)

Screencast.From.2025-02-13.16-01-34.mp4

Known bugs:

• if storeState is called from any change it will set the browser theme 🙈

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io