Arcane Shaders V3 Update

Changelog:

Removed weird circle around the sun when player was underwater

Fixed grey End sky on versions 26+

I added cloud shading:

• Self-shadowing: edges facing the sun stay bright. Edges and interiors with a lot of cloud between them and the sun get shadowed.
• Thick centers get darker, but never fully black, so the clouds don’t look flat gray.
• Undersides of thick clouds are darker and a bit cooler, like sky light being blocked from above.
• Rain darkens the shading on top of the existing gray-out.
• Silver lining works as before. The old “thick centers slightly darker” tweak is skipped when shading is on, so the two don’t double up.

Reworked Nether and added:

• Embers and spores
• Biome colors
• Swirling, lava-lit fog
• Heat haze
• Two-tone lighting
• New look for lava