test(front): fix main failing test due to timezone (#11295)

# Introduction
Due to winter to summer timezone update, it shown that we have some unit
tests flakiness due to both mocked and unmocked date.now invokation
between app bootstrap and test bootstrap

This PR does not refactor this behavior
Just fix the currently failing test

## Note
Removed a duplicated file

packages/twenty-front/setupTests.ts

@@ -13,4 +13,4 @@ import '@testing-library/jest-dom';
  */
 global.structuredClone = (val) => {
   return JSON.parse(JSON.stringify(val));
-};
+};