ping autocomplete should be available when renaming threads too

Author: Oaphi

app/assets/javascripts/comments.js

@@ -236,7 +236,7 @@ $(() => {
    * @type {Record<`${number}-${number}`, Record<string, number>>}
    */
   const pingable = {};
-  $(document).on('keyup', '.js-comment-field, .js-thread-title', pingable_popup);
+  $(document).on('keyup', '.js-comment-field, .js-thread-title-field', pingable_popup);
 
   /**
    * @type {QPixelPingablePopupCallback}

app/views/comments/_new_thread_modal.html.erb

@@ -40,7 +40,7 @@
         be shown.
       </span>
       <%= text_field_tag :title, '',
-                         class: 'form-element js-thread-title',
+                         class: 'form-element js-thread-title-field',
                          data: { post: post.id,
                                  thread: '-1',
                                  character_count: ".js-character-count-thread-title" } %>

app/views/comments/_rename_thread_modal.html.erb

@@ -16,7 +16,10 @@
     </div>
     <div class="modal--body">
       <%= label_tag :title, 'Title', class: 'form-element' %>
-      <%= text_field_tag :title, thread.title, class: 'form-element' %>
+      <%= text_field_tag :title,
+                         thread.title,
+                         class: 'form-element js-thread-title-field',
+                         data: { post: thread.post.id, thread: thread.id } %>
     </div>
     <div class="modal--footer">
       <%= submit_tag 'Update thread', class: 'button is-muted is-filled' %>