Remove redundant lost-and-found warning log

The warning "Failed to send delta to lost and found for client" was
duplicative — emit_lost_and_found already logs the underlying cause
(either "Redis token owner not found" or "Redis error publishing
lost and found delta") for both failure modes. The extra warning
wasn't actionable and confused users.

Author: claude

reflex/app.py

@@ -1593,10 +1593,7 @@ async def emit_update(self, update: StateUpdate, token: str) -> None:
         ):
             if isinstance(self._token_manager, RedisTokenManager):
                 # The socket belongs to another instance of the app, send it to the lost and found.
-                if not await self._token_manager.emit_lost_and_found(token, update):
-                    console.warn(
-                        f"Failed to send delta to lost and found for client {token!r}"
-                    )
+                await self._token_manager.emit_lost_and_found(token, update)
             else:
                 # If the socket record is None, we are not connected to a client. Prevent sending
                 # updates to all clients.