[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/api/graphql/workspace-query-runner/utils/with-soft-deleted.util.ts

@@ -1,6 +1,6 @@
-import { ObjectRecordFilter } from 'src/engine/api/graphql/workspace-query-builder/interfaces/object-record.interface';
+import { isDefined } from 'twenty-shared';
 
-import { isDefined } from 'src/utils/is-defined';
+import { ObjectRecordFilter } from 'src/engine/api/graphql/workspace-query-builder/interfaces/object-record.interface';
 
 export const withSoftDeleted = <T extends ObjectRecordFilter>(
   filter: T | undefined | null,

packages/twenty-server/src/engine/api/graphql/workspace-query-runner/utils/workspace-query-runner-graphql-api-exception-handler.util.ts

@@ -1,4 +1,5 @@
 import { QueryFailedError } from 'typeorm';
+import { isDefined } from 'twenty-shared';
 
 import { WorkspaceQueryRunnerOptions } from 'src/engine/api/graphql/workspace-query-runner/interfaces/query-runner-option.interface';
 
@@ -17,7 +18,6 @@ import {
   TimeoutError,
   UserInputError,
 } from 'src/engine/core-modules/graphql/utils/graphql-errors.util';
-import { isDefined } from 'src/utils/is-defined';
 
 export const workspaceQueryRunnerGraphqlApiExceptionHandler = (
   error: Error,