Fix incorrect product assignment for store-assigned users

Corrected the logic in `DlcPage.tsx` to properly assign the `groupId` for DLC products, ensuring users are associated with their correct store group.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: b163d4c0-de5e-4f4e-a9c0-aed4c7049718
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/b163d4c0-de5e-4f4e-a9c0-aed4c7049718/W2tfZav

replit.md

@@ -47,7 +47,7 @@ Preferred communication style: Simple, everyday language.
 - **User Management**: Comprehensive features including user deletion with ownership transfer, consistent name and email field handling, and robust password hashing.
 - **Calendar Synchronization**: Proper display of delivery dates and automatic synchronization of order statuses.
 - **Database Schema Download**: Admin-only feature to download comprehensive database structure reports.
-- **DLC Product Management**: **DEV-FIXED**: Corrected MemStorage implementation for proper DLC persistence in development. Cache invalidation fixed with exact:false for production compatibility.
+- **DLC Product Management**: **FULLY-FIXED**: Corrected MemStorage implementation for proper DLC persistence in development. Cache invalidation fixed with exact:false for production compatibility. **GROUPID-FIX**: Resolved issue where users assigned to store #2 were creating DLC products for store #1 due to incorrect groupId selection logic.
 - **Robust UI Architecture**: Critical pages rebuilt with custom Tailwind CSS components to eliminate shadcn/ui production bundling issues.
 
 ## External Dependencies