Add color_mode support to MQTT light with basic schema

[emontnemery]

Proposed change

Add color_mode support to MQTT light with basic schema

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• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
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[emontnemery]

Refactoring moved to #50530

[MartinHjelmare]

Suggested change

	(xy := kwargs.get(ATTR_XY_COLOR)) # pylint: disable=invalid-name
	(xy_color := kwargs.get(ATTR_XY_COLOR))