Save restore_state store in worker thread

homeassistant/helpers/restore_state.py

@@ -119,7 +119,11 @@ class RestoreStateData:
         """Initialize the restore state data class."""
         self.hass: HomeAssistant = hass
         self.store = Store[list[dict[str, Any]]](
-            hass, STORAGE_VERSION, STORAGE_KEY, encoder=JSONEncoder
+            hass,
+            STORAGE_VERSION,
+            STORAGE_KEY,
+            encoder=JSONEncoder,
+            serialize_in_event_loop=False,
         )
         self.last_states: dict[str, StoredState] = {}
         self.entities: dict[str, RestoreEntity] = {}