Privacy: require manage_privacy_options capability for showing WP_Privacy_Policy_Content::notice().

Props ocean90.
Fixes #44055.
Built from https://develop.svn.wordpress.org/trunk@43248


git-svn-id: http://core.svn.wordpress.org/trunk@43077 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/misc.php

@@ -1565,6 +1565,10 @@ final class WP_Privacy_Policy_Content {
 			return;
 		}
 
+		if ( ! current_user_can( 'manage_privacy_options' ) ) {
+			return;
+		}
+
 		$policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' );
 
 		if ( ! $policy_page_id || $policy_page_id != $post->ID ) {