fix world client leak in CloudRenderer (#2227)

src/main/java/com/gtnewhorizons/angelica/render/CloudRenderer.java

@@ -98,6 +98,10 @@ public class CloudRenderer implements IResourceManagerReloadListener {
         return GalaxySpaceClouds.supports(world, handler);
     }
 
+    public void invalidateWorld() {
+        this.world = null;
+    }
+
     public void checkSettings() {
         if (world != mc.theWorld) {
             clearLayers();

src/main/java/com/gtnewhorizons/angelica/rendering/celeritas/CeleritasWorldRenderer.java

@@ -6,6 +6,7 @@ import java.util.Comparator;
 import java.util.List;
 
 import com.gtnewhorizons.angelica.compat.bop.FogBiomeCache;
+import com.gtnewhorizons.angelica.render.CloudRenderer;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.multiplayer.WorldClient;
 import net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher;
@@ -175,6 +176,7 @@ public class CeleritasWorldRenderer extends SimpleWorldRenderer<WorldClient, Ang
         GpuCulling.onWorldUnload();
         FfpExtendedAttribs.reset();
         FogBiomeCache.invalidate();
+        CloudRenderer.getCloudRenderer().invalidateWorld();
         super.unloadWorld();
     }