Move state length validation to StateMachine APIs (#143681)

* Move state length validation to StateMachine async_set method

We call validate_state to make sure we do not allow any states
into the state machine that have a length>255 so we do not break
the recorder. Since async_set_internal already requires callers
to pre-validate the state, we can move the check to async_set
instead of at State object creation time to avoid needing to
check it twice in the hot path (entity write state)

* move check in async_set_internal so it only happens on state change

* no need to check if same_state

homeassistant/helpers/entity.py

@@ -31,7 +31,6 @@ from homeassistant.const import (
     ATTR_SUPPORTED_FEATURES,
     ATTR_UNIT_OF_MEASUREMENT,
     DEVICE_DEFAULT_NAME,
-    MAX_LENGTH_STATE_STATE,
     STATE_OFF,
     STATE_ON,
     STATE_UNAVAILABLE,
@@ -1217,16 +1216,6 @@ class Entity(
             self._context = None
             self._context_set = None
 
-        if len(state) > MAX_LENGTH_STATE_STATE:
-            _LOGGER.error(
-                "State %s for %s is longer than %s, falling back to %s",
-                state,
-                self.entity_id,
-                MAX_LENGTH_STATE_STATE,
-                STATE_UNKNOWN,
-            )
-            state = STATE_UNKNOWN
-
         # Intentionally called with positional args for performance reasons
         self.hass.states.async_set_internal(
             self.entity_id,