about gsplat aabb

[szhang963]

Describe the bug
I found the quality decreased when I did not use ‘auto_scale_poses’ to scale the poses for gsplat method.
Though I adjust the scene box to adapt the poses, like this,

      poses_xyz = poses[:, :3, 3]
      aabb_scale = poses_xyz.abs().max(dim=0)[0] + 40
      aabb = torch.stack([-aabb_scale, aabb_scale], dim=0)
      scene_box = SceneBox(aabb=aabb)

I used the poster_v3 dataset to test the issue.

• The result of the default setting (scale is auto, aabb is -1~1) for splatfacto is as follows,
  
• However, the result of the non-normalization setting (scale is 1, aabb is [[-44.0906, -44.3148, -42.1914],
  [ 44.0906, 44.3148, 42.1914]]) for splatfacto is as follows,
  

As far as I know, the original Gaussian Splating is a non-normalization setting for poses and points and does not set the aabb scene box. Could you implement the issue and check the reason？