Issue #3484105 by nicxvan, godotislate: Automatically included .inc files are no longer included

(cherry picked from commit 201c8394)

Closes #3488290

core/modules/path_alias/src/AliasManager.php

@@ -144,7 +144,7 @@ public function getPathByAlias($alias, $langcode = NULL) {
    * {@inheritdoc}
    */
   public function getAliasByPath($path, $langcode = NULL) {
-    $path ??= '';
+    $path = (string) $path;
     if (!str_starts_with($path, '/')) {
       $path = '/' . $path;
     }