CobbleGacha Expanded Alpha 3.7.19

Gacha animation layout fix:
- Keeps the 3.7.18 VFX styling.
- The large RGB pulsing frame/box is now extended downward so its bottom sits just above the yellow/gold panel border.
- Slightly strengthened the dim base frame so the moving RGB pulse reads more cleanly.
- No gameplay logic or reward logic changed.
