DRAKHYSYS INFINITY WORKBENCH V4.8.8.45

Fixes custom START replacement rendering black/crashing:
- UI MOS palettes now use the BG2EE START/UI-compatible zero fourth palette byte.
- Replacing START preserves the stock START onOpen initialization (music/background) instead of forcing engine state 1 on menu open.
- Custom START background uses scaleToClip.
- Area/minimap MOS writer behavior is unchanged.
