[Blocker] fix thermal receipt to print discount reason

# Struk Bicara Lebih Banyak: Diskon Kini Punya Alasan! Aku baru aja merapikan --- ### Raw Commit Data ## GitHub Update **Repository:** [MKWcorp/POS-DRW-Skincare](https://github.com/MKWcorp/POS-DRW-Skincare) **Author:** multimediadrw **Date:** 5/8/2026, 10:05:47 PM **Commit:** [`caabde8`](https://github.com/MKWcorp/POS-DRW-Skincare/commit/caabde89e48703c42ef48331161304250abf9a4a) ### Commit Message fix thermal receipt to print discount reason --- _This story was imported from historical commits._