PageContent: fix logic in Page.Contents (#19002)

public/app/core/components/Page/PageContents.tsx

@@ -13,12 +13,7 @@ class PageContents extends Component<Props> {
   render() {
     const { isLoading } = this.props;
 
-    return (
-      <div className="page-container page-body">
-        {isLoading && <PageLoader />}
-        {this.props.children}
-      </div>
-    );
+    return <div className="page-container page-body">{isLoading ? <PageLoader /> : this.props.children}</div>;
   }
 }