[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/settings/workspace/components/NameField.tsx

@@ -7,8 +7,8 @@ import { currentWorkspaceState } from '@/auth/states/currentWorkspaceState';
 import { TextInput } from '@/ui/input/components/TextInput';
 import { useLingui } from '@lingui/react/macro';
 import isEmpty from 'lodash.isempty';
+import { isDefined } from 'twenty-shared';
 import { useUpdateWorkspaceMutation } from '~/generated/graphql';
-import { isDefined } from '~/utils/isDefined';
 import { isUndefinedOrNull } from '~/utils/isUndefinedOrNull';
 import { logError } from '~/utils/logError';