BizCore v4.4.2 Display Hotfix

Fix:
- production-dashboard.php called bc_qty(), but that function is not available in the current deployment.
- Replaces that dependency with a local safe quantity formatter.
- Applies the same safeguard to production-wastage-report.php.
- Keeps the v4.4.1 database migration fixes.

Install:
1. Upload ZIP to existing BizCore root.
2. Extract > Overwrite.
3. Open https://ceylongemx.online/update-4.4.2.php
4. Confirm total_wastage_qty and yield_efficiency show OK.
5. Click Apply / Verify v4.4.2.
6. Ctrl + F5.
