GDScript 2.0: Stack overflow regression

[unfa]

Godot version

4.0 dev (7b8c574) nightly after 30th of April

System information

Arch Linux, KDE Plasma, Radeon RX580, amdgpu driver, Vulkan

Issue description

After testing my game in nightly builds of Godot 4.0 dev, starting with commit 7b8c574401b3b3a211fd478eaa3fbb99b6dbb798 (not strictly bisected) I am experiencing a Stack Overflow error, while previously it wasn't there, even though nothing in the game's code has changed:

This error was first noticed in a dev build from commit 7b8c574
The last known working Godot 4.0 dev commit is 8adf048

A regression must have been introduced somewhere between these two commits.

Steps to reproduce

1. Clone and my project Liblast from this specific commit: https://codeberg.org/unfa/Liblast/src/commit/31aefa29dcd62e637dcd203e77602f051a68c320 (the project uses LFS, so make sure you clone that as well - if in doubt please refer to this section of project's README)
2. Open the scene Game/Assets/Tests/Characer Test.tscn
3. Hit F6 to play the curent scene.
4. Observe a stack overflow error.

Minimal reproduction project

No response

[kyleguarco]

Duplicate of #61130?

[dalexeev]

Please check it out in 4.0 RC 1. If the error is still reproduced, please report it and add an MRP.

[vnen]

I would like to a see a new test too, as this might have been fixed not long after reported by #62462.