Revert "Sync Sensei Pro hotfix from SVN"

This reverts commit b6dba95.

wp-content/plugins/sensei-pro/modules/course-showcase/includes/class-course-showcase-cpt-list.php

@@ -159,7 +159,7 @@ public function hide_pending_state( $post_states, $post ): array {
 	public function hydrate_status_cache(): void {
 		global $wp_query;
 
-		if ( ! is_admin() || ! function_exists( 'get_current_screen' ) ) {
+		if ( ! is_admin() ) {
 			return;
 		}