JavaScript DracoLoader failed to load uv2

In order to use the lightmap mesh, uv2 is required, but the dracoloader cannot load uv2 normally. I modified the default loading configuration, but the loaded uv2 is not normal
``` js
this.defaultAttributeIDs = {
position: 'POSITION',
normal: 'NORMAL',
color: 'COLOR',
uv: 'TEX_COORD',
uv2: 'TEX_COORD1'
};
this.defaultAttributeTypes = {
position: 'Float32Array',
normal: 'Float32Array',
color: 'Float32Array',
uv: 'Float32Array',
uv2: 'Float32Array'
};
```
[[Cube.drc](https://discourse.threejs.org/uploads/short-url/ApS4qHryAao38Vdui4QYuuFWLdG.drc)](https://discourse.threejs.org/uploads/short-url/ApS4qHryAao38Vdui4QYuuFWLdG.drc)