Fixed Mixins that were targeting the wrong class/methods.

src/main/java/appeng/mixins/spatial/BuiltinBiomesMixin.java

@@ -12,7 +12,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 import net.minecraft.util.registry.BuiltinRegistries;
 import net.minecraft.util.registry.RegistryKey;
 import net.minecraft.world.biome.Biome;
-import net.minecraft.world.biome.BiomeKeys;
+import net.minecraft.world.biome.BuiltinBiomes;
 
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 
@@ -23,21 +23,21 @@ import appeng.spatial.SpatialStorageDimensionIds;
  * This only needs to be here because the server-side will create a dynamic
  * registry manager long before our mod is initialized.
  */
-@Mixin(BiomeKeys.class)
-public class BiomeKeysMixin {
+@Mixin(BuiltinBiomes.class)
+public class BuiltinBiomesMixin {
 
     @Unique
     private static final Logger LOGGER = LogManager.getLogger();
 
     @Shadow
-    private static Int2ObjectMap<RegistryKey<Biome>> BIOMES;
+    private static Int2ObjectMap<RegistryKey<Biome>> BY_RAW_ID;
 
     @Inject(method = "<clinit>", at = @At("TAIL"))
     private static void registerBiomes(CallbackInfo ci) {
         BuiltinRegistries.add(BuiltinRegistries.BIOME, SpatialStorageDimensionIds.BIOME_KEY.getValue(),
                 SpatialStorageBiome.INSTANCE);
         int rawId = BuiltinRegistries.BIOME.getRawId(SpatialStorageBiome.INSTANCE);
-        RegistryKey<Biome> prev = BIOMES.put(rawId, SpatialStorageDimensionIds.BIOME_KEY);
+        RegistryKey<Biome> prev = BY_RAW_ID.put(rawId, SpatialStorageDimensionIds.BIOME_KEY);
         if (prev != null) {
             LOGGER.warn("Biome with raw-id {} was already registered: {}", rawId, prev);
         }

src/main/java/appeng/mixins/spatial/DimensionTypeMixin.java

@@ -49,7 +49,7 @@ public class DimensionTypeMixin {
                 dimensionType);
     }
 
-    @Inject(method = "method_28517", at = @At("RETURN"))
+    @Inject(method = "createDefaultDimensionOptions", at = @At("RETURN"))
     private static void buildDimensionRegistry(Registry<DimensionType> dimensionTypes, Registry<Biome> biomes,
             Registry<ChunkGeneratorSettings> chunkGeneratorSettings, long seed,
             CallbackInfoReturnable<SimpleRegistry<DimensionOptions>> cir) {