Remove single entity limit in some circumstances

[TheJulianJES]

Issue

The following code limits devices to one entity on an endpoint depending on if the Zigbee device type and HA domain match.
This has caused issues in the past (with config entities, but will also apply to normal entities). It's a remnant of when clusters were limited to one entity. The implementation also isn't ideal in the first place (comparing Zigbee devie type with HA domain).

zha/zha/application/discovery.py

Lines 521 to 530 in 77e4094

	if platform == cmpt_by_dev_type:
	# for well known device types,
	# like thermostats we'll take only 1st class
	endpoint.async_new_entity(
	platform,
	entity_and_handler.entity_class,
	endpoint.unique_id,
	entity_and_handler.claimed_cluster_handlers,
	)
	break

Migration

A migration for the unique IDs will also need to happen in Home Assistant Core if we change this.
Alternatively, we could try and leave the unique ID of the matching entity the same and just add the others with a the cluster id suffix, like done for unmatched entities.