fix conditional that fails linting now

todo: this could be cleaned up to bail earlier if empty($sites) but I don't want to risk breakage right now.

src/class-decoupled-preview-settings.php

@@ -730,7 +730,10 @@ public function get_enabled_site_by_post_type( string $post_type ): ?array {
 			$enable_sites = [];
 			if ( ! empty( $sites ) ) {
 				foreach ( $sites['preview'] as $site ) {
-					if ( ! isset( $site['content_type'] ) || isset( $site['content_type'] ) && in_array( $post_type, $site['content_type'], true ) ) {
+					if ( 
+						! isset( $site['content_type'] ) || 
+						( isset( $site['content_type'] ) && in_array( $post_type, $site['content_type'], true ) ) 
+					) {
 						$enable_sites[] = $site;
 					}
 				}