Merge pull request #2210 from tsgcpp/feature/remove_matrix_properties_in_migration

nodeにmatrixを使用したVRM0.xのロードを実施すると "Exception: matrix with translation" が発生する問題を解消する

Assets/VRM10/Runtime/Migration/MeshUpdater.cs

@@ -152,6 +152,9 @@ namespace UniVRM10
                 gltfNode.rotation = node.LocalRotation.ToFloat4();
                 gltfNode.scale = node.LocalScaling.ToFloat3();
 
+                // remove matrix properties because TRS is used
+                gltfNode.matrix = null;
+
                 if (gltfNode.mesh >= 0)
                 {
                     if (gltfNode.skin >= 0)