bump-hrx: the scheduled HRX pin sync is failing #350

The bump-hrx run 37629106123 failed: https://github.com/1bit-MONSTER/engine/actions/runs/37629106123

Look at the sync steps ('Sync the fork and merge AMD's pin into our line', 'Merge AMD's hrx-system pin into our line'). If one is a merge conflict, the conflicting files are named in the log; resolve them by hand on 1bit/hrx-vulkan-patched or on 1bit-MONSTER/hrx-system 1bit/main, then re-run this workflow.

Why this step exists: bump-hrx failed on every scheduled run from 2026-10-01 to 2026-10-05 without anyone noticing, and the HRX pin silently froze.