Random errors related to inner classes

[KoBeWi]

Godot version

4.0 ca25c6e

System information

Windows 10 x64

Issue description

When you open a scene that has a script with an inner class, you will sometimes get this error:

Attempt to open script '' resulted in error 'Can't open file'.

It's triggered in specific circumstances, but prints every time the scene is opened.

Seems like the script has to be built-in and the class has to be used as an array type. Not sure if it's the only case that triggers the error.

Steps to reproduce

1. Create a new scene
2. Add any node and attach a new built-in script
3. Put this in the script

var arr: Array[Inner]

class Inner:
	pass

4. Save and reload the scene

Minimal reproduction project

No response

[rune-scape]

issue-67439.zip
i just checked that this was an issue in beta 3 but is fixed as of #68374 @akien-mga
yes, the inner class had to be used as a type for the error to happen.
i think paths of inner classes were not being set correctly in builtin scripts