Revert "Unify workspace dropdowns; Update layouts (#458)"

This reverts commit 4bc8448a1d.

apps/web/app/[locale]/not-found.tsx

@@ -1,26 +0,0 @@
-import { getTranslations } from 'next-intl/server';
-
-import { ErrorPageContent } from '~/components/error-page-content';
-
-export const generateMetadata = async () => {
-  const t = await getTranslations('common');
-  const title = t('notFound');
-
-  return {
-    title,
-  };
-};
-
-const NotFoundPage = async () => {
-  return (
-    <div className={'flex h-screen flex-1 flex-col'}>
-      <ErrorPageContent
-        statusCode={'common.pageNotFoundHeading'}
-        heading={'common.pageNotFound'}
-        subtitle={'common.pageNotFoundSubHeading'}
-      />
-    </div>
-  );
-};
-
-export default NotFoundPage;