Refactor socket session user structure and update user ID retrieval

- Changed the user structure in ISocketSession to include an object with an 'id' property.
- Updated the getLoggedInUserIdFromSocket function to return the user ID directly from the new structure.

worklenz-backend/src/interfaces/socket-session.ts

@@ -1,5 +1,5 @@
 export interface ISocketSession {
   session?: {
-    passport?: { user?: string; }
+    passport?: { user?: { id: string } }
   }
 }