FS25 Working Width Options - JD v1.0.0.1

Mower timing stability fix:
- Mower WorkArea correction now runs BEFORE onStartWorkAreaProcessing.
- Removed live Mower.onUpdate WorkArea rewrites.
- Prevents GIANTS density-map processing from seeing mixed old/new mower geometry in the same pass.
- Keeps Default / 25 m / 50 m, spreader fix, plow/cultivator safe mode, guides, and custom icon.
