[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/views/hooks/useSaveCurrentViewGroups.ts

@@ -5,8 +5,8 @@ import { usePersistViewGroupRecords } from '@/views/hooks/internal/usePersistVie
 import { useGetViewFromCache } from '@/views/hooks/useGetViewFromCache';
 import { currentViewIdComponentState } from '@/views/states/currentViewIdComponentState';
 import { ViewGroup } from '@/views/types/ViewGroup';
+import { isDefined } from 'twenty-shared';
 import { isDeeplyEqual } from '~/utils/isDeeplyEqual';
-import { isDefined } from '~/utils/isDefined';
 import { isUndefinedOrNull } from '~/utils/isUndefinedOrNull';
 
 export const useSaveCurrentViewGroups = (viewBarComponentId?: string) => {