GDScript named-class scripts don't appear in variable type selection

[Naros]

Describe the bug

When a custom type is defined in GDScript using class_name, it is not shown in the variable type selection.

Expected behavior

Custom type should be selectable in the variable type dialog.

Actual behavior

It's not present.

How to Reproduce?

No response

Godot full version

4.2.1-stable

Orchestrator version

2.1.dev1

Additional information

So these global class names are provided via ProjectSettings::get_singleton()->get_global_class_list().

The main issue here is that there isn't a way that's clear for Orchestrator to obtain details about the custom types properties and methods without constructing an instance of the GDScript first, and then getting the data. We need to investigate if there is a way to get this from the language or some metadata cache in Godot to avoid this extra allocation.