Remove jQuery import from some files (#32512)

Many files do not directly depend on jQuery now.

To clarify the usage: use `fomanticQuery` to operate Fomantic
components.

Then developers could focus on removing the remaining jQuery usages by
searching `import $` globally.

21 files now:

```
./components/RepoBranchTagSelector.vue:3:import $ from 'jquery';
./features/admin/common.ts:1:import $ from 'jquery';
./features/admin/emails.ts:1:import $ from 'jquery';
./features/common-button.ts:1:import $ from 'jquery';
./features/comp/ComboMarkdownEditor.ts:3:import $ from 'jquery'; (I am working on it, there will be a new PR)
./features/comp/LabelEdit.ts:1:import $ from 'jquery';
./features/notification.ts:1:import $ from 'jquery';
./features/org-team.ts:1:import $ from 'jquery';
./features/repo-code.ts:1:import $ from 'jquery';
./features/repo-common.ts:1:import $ from 'jquery';
./features/repo-diff.ts:1:import $ from 'jquery';
./features/repo-editor.ts:1:import $ from 'jquery';
./features/repo-issue-content.ts:1:import $ from 'jquery';
./features/repo-issue-list.ts:1:import $ from 'jquery';
./features/repo-issue-sidebar.ts:1:import $ from 'jquery';
./features/repo-issue.ts:1:import $ from 'jquery';
./features/repo-legacy.ts:1:import $ from 'jquery';
./features/repo-new.ts:1:import $ from 'jquery';
./features/repo-projects.ts:1:import $ from 'jquery';
./features/repo-settings.ts:1:import $ from 'jquery';
./features/repo-template.ts:1:import $ from 'jquery';
```

web_src/js/vendor/jquery.are-you-sure.ts

@@ -195,3 +195,7 @@ export function initAreYouSure($) {
     });
   };
 }
+
+export function applyAreYouSure(selector: string) {
+  $(selector).areYouSure();
+}