[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-server/src/engine/twenty-orm/utils/format-column-names-from-composite-field-and-subfield.util.ts

@@ -1,6 +1,4 @@
-import { capitalize } from 'twenty-shared';
-
-import { isDefined } from 'src/utils/is-defined';
+import { capitalize, isDefined } from 'twenty-shared';
 
 export const formatColumnNamesFromCompositeFieldAndSubfields = (
   fieldName: string,