Built-in script of preloaded scene requires editor restart to become tool

[KoBeWi]

Godot version

4.2 dev4

System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

Issue description

Title.

godot.windows.editor.dev.x86_64_VsHQKUPjHc.mp4

Closing all scenes and everything does not help. The script is probably cached somewhere and can't get reloaded.

Steps to reproduce

1. Create SceneB
2. Create SceneA
3. Preload SceneB in SceneA
4. In SceneB create a script (built-in) and add @tool
5. The script is not tool (the icon is white)

Minimal reproduction project

toolbug.zip
Try to add @tool built-in script in the Broken.tscn. Does not matter if Preloader is opened or not.