Add lock to internal socket fetch function

backend/decky_loader/localplatform/localsocket.py

@@ -19,6 +19,7 @@ class UnixSocket:
         self.reader = None
         self.writer = None
         self.server_writer = None
+        self.open_lock = asyncio.Lock()
 
     async def setup_server(self):
         try:
@@ -42,6 +43,7 @@ class UnixSocket:
             return True
 
     async def get_socket_connection(self):
+        async with self.open_lock:
             if not await self._open_socket_if_not_exists():
                 return None, None