Fix sort with pagination and composite fields (#9150)

Fixes https://github.com/twentyhq/twenty/issues/8863

## Description
This PR fixes an issue with cursor-based pagination when dealing with
composite fields (like `fullName`). Previously, the pagination direction
was incorrectly determined for composite fields because the code wasn't
properly handling nested object structures in the `orderBy` parameter.
Refactored the code accordingly.

packages/twenty-server/src/engine/api/graphql/workspace-query-builder/interfaces/object-record.interface.ts

@@ -18,7 +18,9 @@ export enum OrderByDirection {
 }
 
 export type ObjectRecordOrderBy = Array<{
-  [Property in keyof ObjectRecord]?: OrderByDirection;
+  [Property in keyof ObjectRecord]?:
+    | OrderByDirection
+    | Record<string, OrderByDirection>;
 }>;
 
 export interface ObjectRecordDuplicateCriteria {