Selecting and item in the editor hierarchy causes a hang

[Fortune117]

Describe the bug

When you have a lot of game objects selecting one will cause a short hang:

2025-01-07.17-49-45.mp4

From a short profile I did it looks like it's caused by the undo system:

But I am not great at using the profiler so take that with a grain of salt.

To Reproduce

1. Open the provided repo
2. click on a game object in the hierarchy of minimal.scene
3. see the hang

Expected behavior

Shouldn't hang so long

Media/Files

bug_repo.zip

Additional context

No response

[lolleko]

I think @handsomematt fixed this a while ago or the new undosystem did. In any case i cannot reproduce this anymore.