Merge pull request #44413 from nextcloud/backport/44408/stable28

[stable28] fix(JSRecourceLocator): Add missing slash after server root

Author: susnux

lib/private/Template/JSResourceLocator.php

@@ -52,7 +52,7 @@ public function doFind($script) {
 		$app = substr($script, 0, strpos($script, '/'));
 		$scriptName = basename($script);
 		// Get the app root path
-		$appRoot = $this->serverroot . 'apps/';
+		$appRoot = $this->serverroot . '/apps/';
 		$appWebRoot = null;
 		try {
 			// We need the dir name as getAppPath appends the appid