[CHORE] Avoid isDefined duplicated reference, move it to twenty-shared (#9967)

# Introduction
Avoid having multiple `isDefined` definition across our pacakges
Also avoid importing `isDefined` from `twenty-ui` which exposes a huge
barrel for a such little util function

## In a nutshell
Removed own `isDefined.ts` definition from `twenty-ui` `twenty-front`
and `twenty-server` to move it to `twenty-shared`.
Updated imports for each packages, and added explicit dependencies to
`twenty-shared` if not already in place

Related PR https://github.com/twentyhq/twenty/pull/9941

packages/twenty-front/src/modules/error-handler/components/SentryInitEffect.tsx

@@ -7,8 +7,8 @@ import { currentUserState } from '@/auth/states/currentUserState';
 import { currentWorkspaceMemberState } from '@/auth/states/currentWorkspaceMemberState';
 import { currentWorkspaceState } from '@/auth/states/currentWorkspaceState';
 import { sentryConfigState } from '@/client-config/states/sentryConfigState';
+import { isDefined } from 'twenty-shared';
 import { REACT_APP_SERVER_BASE_URL } from '~/config';
-import { isDefined } from '~/utils/isDefined';
 
 export const SentryInitEffect = () => {
   const sentryConfig = useRecoilValue(sentryConfigState);