Privacy: Mark Privacy Policy page as such in the Pages list table.

Props desrosj, subrataemfluence, ianbelanger, danieltj.
Fixes #44006.

git-svn-id: https://develop.svn.wordpress.org/trunk@43495 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/template.php

@@ -1898,6 +1898,10 @@ function _post_states( $post ) {
 		}
 	}
 
+	if ( intval( get_option( 'wp_page_for_privacy_policy' ) ) === $post->ID ) {
+		$post_states['page_for_privacy_policy'] = __( 'Privacy Policy Page' );
+	}
+
 	/**
 	 * Filters the default post display states used in the posts list table.
 	 *