Port patch to MR

This reverts commit ca82a9df.

Closes #3131508

src/Form/ClearTagCacheForm.php

@@ -80,7 +80,7 @@ class ClearTagCacheForm extends FormBase {
   public function submitForm(array &$form, FormStateInterface $form_state) {
     // Get Form Values.
     $form_data = $form_state->getvalues();
-    $tags_arr = explode(',', $form_data['tags_name']);
+    $tags_arr = array_filter(array_map('trim', explode(',', $form_data['tags_name'])));
     Cache::invalidateTags($tags_arr);
     // Message for user.
     $this->messenger->addStatus('Tags cache clear successfully !');