fix(dashboard): login alert background (#9305)

**What**
- fix login error alert bg in dark mode

packages/admin/dashboard/src/routes/invite/invite.tsx

@@ -350,7 +350,7 @@ const CreateView = ({
             )}
             {serverError && (
               <Alert
-                className="p-2 bg-white items-center"
+                className="p-2 bg-ui-bg-base items-center"
                 dismissible
                 variant="error"
               >

packages/admin/dashboard/src/routes/login/login.tsx

@@ -144,7 +144,7 @@ export const Login = () => {
               )}
               {serverError && (
                 <Alert
-                  className="p-2 bg-white items-center"
+                  className="p-2 bg-ui-bg-base items-center"
                   dismissible
                   variant="error"
                 >