[Glitch] Fix log out from user menu not working on Safari

Port c3e1d86d58 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/ui/components/confirmation_modals/log_out.tsx

@@ -25,7 +25,7 @@ export const ConfirmLogOutModal: React.FC<BaseConfirmationModalProps> = ({
   const intl = useIntl();
 
   const onConfirm = useCallback(() => {
-    logOut();
+    void logOut();
   }, []);
 
   return (