Fix for non-Layout WS Overview page

Author: cee-chen

x-pack/plugins/enterprise_search/public/applications/workplace_search/views/overview/overview.tsx

@@ -56,7 +56,14 @@ export const Overview: React.FC = () => {
     initializeOverview();
   }, [initializeOverview]);
 
-  if (dataLoading) return <Loading />;
+  // TODO: Remove div wrapper once the Overview page is using the full Layout
+  if (dataLoading) {
+    return (
+      <div style={{ height: '90vh' }}>
+        <Loading />
+      </div>
+    );
+  }
 
   const hideOnboarding = hasUsers && hasOrgSources && isOldAccount && orgName !== defaultOrgName;