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/composables/spec/emitter.spec.js

@@ -2,17 +2,17 @@ import { shallowMount } from '@vue/test-utils';
 import { emitter } from 'shared/helpers/mitt';
 import { useEmitter } from '../emitter';
 
-jest.mock('shared/helpers/mitt', () => ({
+vi.mock('shared/helpers/mitt', () => ({
   emitter: {
-    on: jest.fn(),
-    off: jest.fn(),
+    on: vi.fn(),
+    off: vi.fn(),
   },
 }));
 
 describe('useEmitter', () => {
   let wrapper;
   const eventName = 'my-event';
-  const callback = jest.fn();
+  const callback = vi.fn();
 
   beforeEach(() => {
     wrapper = shallowMount({
@@ -29,10 +29,6 @@ describe('useEmitter', () => {
     });
   });
 
-  afterEach(() => {
-    jest.resetAllMocks();
-  });
-
   it('should add an event listener on mount', () => {
     expect(emitter.on).toHaveBeenCalledWith(eventName, callback);
   });