Init popup for new code comment (#20234)

- Initialize the popup for the tooltip inside the new code comment.
- This works and is good enough to have this issue fixed for 1.17


Fix #20068

web_src/js/index.js

@@ -56,6 +56,7 @@ import {
   initGlobalFormDirtyLeaveConfirm,
   initGlobalLinkActions,
   initHeadNavbarContentToggle,
+  initGlobalPopups,
 } from './features/common-global.js';
 import {initRepoTopicBar} from './features/repo-home.js';
 import {initAdminEmails} from './features/admin-emails.js';
@@ -99,6 +100,7 @@ initVueEnv();
 $(document).ready(() => {
   initGlobalCommon();
 
+  initGlobalPopups();
   initGlobalButtonClickOnEnter();
   initGlobalButtons();
   initGlobalCopyToClipboardListener();