zzz_terralith_mundusmagicae_worldgen_overhaul

Changes:
- Removes Terralith biomes: terralith:mirage_isles, terralith:moonlight_grove, terralith:lavender_valley, terralith:painted_mountains, terralith:amethyst_rainforest, terralith:orchid_swamp, terralith:shrubland, terralith:blooming_plateau
- Makes terralith:sakura_grove rare (keeps 8 parameter points).
- Makes terralith:valley_clearing rarer (keeps 1 parameter point).
- Removes micro-biomes by deleting biome source entries with small climate volume (< 0.001).
- Scales climate noise ~4x by lowering firstOctave of temperature/vegetation/erosion by 2.