WLED Palette Selector property

[bcpearce]

Proposed change

Makes a minor change to the WLED integration to update options in the palette selector. Palettes would initially be set once upon entity setup, however the palettes count can change if custom palettes are added. This change makes the options for the palette selector into a property that will update when the device is polled.

An update is required in the underlying library to fully support custom palettes, however the change proposed here are compatible with the existing version. See frenck/python-wled#1603 and frenck/python-wled#1602.

Type of change

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

Additional information

• This PR fixes or closes issue: fixes # requires additional library update to fully fix the related issue
• This PR is related to issue: wled/select.py:180/KeyError: 255 #128181
• Link to documentation pull request: N/A

Checklist

• The code change is tested and works locally.
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• Tests have been added to verify that the new code works.

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[home-assistant]

Hey there @frenck, mind taking a look at this pull request as it has been labeled with an integration (wled) you are listed as a code owner for? Thanks!

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