Fix logbook spinner never disappearing when all entities are filtered (#72816)

homeassistant/components/logbook/websocket_api.py

@@ -356,7 +356,7 @@ async def ws_event_stream(
     )
 
     await _async_wait_for_recorder_sync(hass)
-    if not subscriptions:
+    if msg_id not in connection.subscriptions:
         # Unsubscribe happened while waiting for recorder
         return
 
@@ -388,6 +388,8 @@ async def ws_event_stream(
 
     if not subscriptions:
         # Unsubscribe happened while waiting for formatted events
+        # or there are no supported entities (all UOM or state class)
+        # or devices
         return
 
     live_stream.task = asyncio.create_task(