fix: chunk gets removed from tree before deleting

modules/terrain/terrain.cpp

@@ -100,6 +100,7 @@ void Terrain::construct_chunk_grid() {
 	}
 	this->workload_lock.lock();
 	for (TerrainChunkMesh *mesh : this->meshes) {
+		remove_child(mesh);
 		mesh->queue_free();
 	}
 	size_t const chunks_per_side{ this->side_length / this->chunk_size };