Upgrade/Install: Skip any node_modules directories when removing Genericons example.html files on update.

This can significantly reduce the time required to complete the process in a development environment.

Follow-up to [32386].

Props bobbingwide, afragen, desrosj, SergeyBiryukov.
Fixes #52765.

git-svn-id: https://develop.svn.wordpress.org/trunk@51521 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-admin/includes/update-core.php

@@ -1656,6 +1656,13 @@ function _upgrade_422_find_genericons_files_in_folder( $directory ) {
 	}
 
 	$dirs = glob( $directory . '*', GLOB_ONLYDIR );
+	$dirs = array_filter(
+		$dirs,
+		function( $dir ) {
+			// Skip any node_modules directories.
+			return false === strpos( $dir, 'node_modules' );
+		}
+	);
 
 	if ( $dirs ) {
 		foreach ( $dirs as $dir ) {