fix(ts) make tsc (almost) not cry on native

Co-authored-by: Calinteodor <calin.chitu@8x8.com>
Co-authored-by: Robert Pintilii <robert.pin9@gmail.com>

react/features/notifications/actions.ts

@@ -128,7 +128,7 @@ export function showNotification(props: INotificationProps = {}, type?: string)
                 type: SHOW_NOTIFICATION,
                 props,
                 timeout: getNotificationTimeout(type, notificationTimeouts),
-                uid: props.uid || window.Date.now().toString()
+                uid: props.uid || Date.now().toString()
             });
         }
     };