Fix hardcoded precipitation in ClimateSettingsBuilder (#9402)

This effectively caused all biomes to have precipitation, such as
minecraft:desert.

Fixes #9397

src/main/java/net/minecraftforge/common/world/ClimateSettingsBuilder.java

@@ -6,7 +6,6 @@
 package net.minecraftforge.common.world;
 
 import net.minecraft.world.level.biome.Biome.ClimateSettings;
-import net.minecraft.world.level.biome.Biome.Precipitation;
 import net.minecraft.world.level.biome.Biome.TemperatureModifier;
 
 /**
@@ -56,7 +55,7 @@ public class ClimateSettingsBuilder
      */
     public ClimateSettings build()
     {
-        return new ClimateSettings(true, this.temperature, this.temperatureModifier, this.downfall);
+        return new ClimateSettings(this.hasPrecipitation, this.temperature, this.temperatureModifier, this.downfall);
     }
 
     /**