Add setup type hints to rfxtrx

[epenet]

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[probot-home-assistant]

Hey there @Danielhiversen, @elupus, @RobBie1221, mind taking a look at this pull request as it has been labeled with an integration (rfxtrx) you are listed as a code owner for? Thanks!
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[epenet]

This did not correspond to the hint defined in __init__.py
I think the __init__.py method should be adjusted to pass a bool, but that would be a code change and it seemed safer to adjust the type hint instead to match the current arguments.

core/homeassistant/components/rfxtrx/__init__.py

Lines 249 to 252 in 67c3565

	constructor: Callable[
	[rfxtrxmod.RFXtrxEvent, rfxtrxmod.RFXtrxEvent | None, DeviceTuple, dict],
	list[Entity],
	],

and

core/homeassistant/components/rfxtrx/__init__.py

Line 290 in 67c3565

async_add_entities(constructor(event, event, device_id, {}))

[elupus]

The second event is a auto detected event. So this change is correct. A refactor for auto might be in order later.