feat: Use vitest instead of jest, run all the specs anywhere in app/ folder in the CI (#9722)

Due to the pattern `**/specs/*.spec.js` defined in CircleCI, none of the
frontend spec in the folders such as
`specs/<domain-name>/getters.spec.js` were not executed in Circle CI.

This PR fixes the issue, along with the following changes: 
- Use vitest instead of jest
- Remove jest dependancies
- Update tests to work with vitest

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/components/widgets/conversation/ReplyBox.vue

@@ -197,7 +197,7 @@ import {
 import { LOCAL_STORAGE_KEYS } from 'dashboard/constants/localStorage';
 import { LocalStorage } from 'shared/helpers/localStorage';
 
-const EmojiInput = () => import('shared/components/emoji/EmojiInput');
+const EmojiInput = () => import('shared/components/emoji/EmojiInput.vue');
 
 export default {
   components: {