static vars are not initialized & _static_init is not called on preloaded scripts by tool scripts

[IceflowRE]

Godot version

v4.2.dev4.official [549fcce]

System information

Godot v4.2.dev4 - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1080 Ti (NVIDIA; 31.0.15.3667) - AMD Ryzen 9 7900X 12-Core Processor (24 Threads)

Issue description

Static variables are not initialized and the static constructor is not called on scripts preloaded by tool scripts.
If the preloaded script has the @tool annotation it is initialized/called.

This only affects scripts run in editor.

Steps to reproduce

When opening the project and then opening the scene node you will see this console output:

_static_init of Node
_ready of Node
Node my_var: 32
OtherClass my_var: <null>

Which indicates that the static variables and the static constructor of the preloaded script is not initialized and run.

Minimal reproduction project

static-init.zip

[dalexeev]

If you add @tool to the preloaded script it will work. We have some inconsistency here: in some cases @tool is optional to run dependency code, in other cases it is required (usually Nodes, but in some other cases too, example). I'm not sure if this is a bug as it prevents non-@tool code from being auto-executed.