AquaReal final materials update

- Puddles now use the same style of Fresnel mixing as AquaReal water.
- SSR reflection is a reflection component, not an additive dark layer.
- Wet terrain receives only subtle diffuse darkening; it cannot become a black shadow.
- Metal reflection is blended like polished glass/mirror at grazing angles.
- Reduced ultra-sharp metal glint to eliminate black/dither-like dots.
- Added vanilla ore blocks to the emissive list so the existing bloom pipeline can glow them.
- No shader source from Sarp was copied.
