AquaReal 1.2.0

AquaReal metal + lightning refinement

ONLY changed:
1. Replaced the previous metal reflection block with a clean polished,
   glass-like reflection using the existing AquaReal reflection routine.
   It remains active without rain and is not emissive.
2. Reduced the artificial full-screen lightning flash from 0.95 strength
   to 0.30, bringing the flash much closer to normal vanilla brightness.

NOT changed:
- Rain wetness
- Rain puddles
- Puddle reflection
- Ore colored glow/bloom
- Ore detection


AquaReal water update: deeper blue water and much shorter underwater visibility distance; existing wetness/puddles, metals, ores and godray controls unchanged.
