Always include old_state in EventStateChangedData [tests]

[cdce8p]

Proposed change

old_state should always be included in the event data for EVENT_STATE_CHANGED, even for tests.

core/homeassistant/core.py

Lines 164 to 169 in 3200497

	class EventStateChangedData(TypedDict):
	"""EventStateChanged data."""
	entity_id: str
	old_state: State | None
	new_state: State | None

Type of change

• Dependency upgrade
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• This PR fixes or closes issue: fixes #
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