Issue #3481223: Updated file upload validators to support Drupal versions below 10.2.0

Closes #3481223

src/Form/FileReplaceForm.php

@@ -54,6 +54,20 @@ class FileReplaceForm extends ContentEntityForm {
       '#type' => 'fieldset',
       '#title' => $this->t('Replacement'),
     ];
+
+    $upload_validators = [
+      'FileExtension' => ['extensions' => $extension],
+    ];
+
+    // Check if the current version of Drupal is 10.2.0 or higher
+    // and use the correct upload validators.
+    // @see https://www.drupal.org/node/3363700
+    if (version_compare(\Drupal::VERSION, '10.2.0', '<')) {
+      $upload_validators = [
+        'file_validate_extensions' => [$extension],
+      ];
+    }
+
     $form['replacement']['replacement'] = [
       '#type' => 'file',
       '#description' => $this->t('Select a file with extension .%extension and mimetype %mimetype to replace this file with.',
@@ -61,9 +75,7 @@ class FileReplaceForm extends ContentEntityForm {
           '%extension' => $extension,
           '%mimetype' => $file->getMimeType(),
         ]),
-      '#upload_validators' => [
-        'file_validate_extensions' => [$extension],
-      ],
+      '#upload_validators' => $upload_validators,
       '#attributes' => [
         'accept' => $file->getMimeType(),
       ],