ResourceLoader fails to load nested resources saved in .tres files when a value is passed through the _init of such nested resource.

[Sirosky]

Godot version

Godot_v4.0-beta10_win64

System information

Windows 11, Vulkan, Intel integrated graphics

Issue description

I've been using resources to serve as a savegame, and resources nested within the Save resource to represent data from the game (e.g., player stats, inventory). However, it appears that when there are variables passed through the _init() function of the nested resources, SubResource, Godot doesn't deserialize the nested resource properly.

For example, you won't be able to access the hp value of the nested resource here.

Steps to reproduce

Minimal Reproduction Project

1. Run project, click save button.
2. Save button will create a new .tres save resource, and pass a variable through _init() of the nested subresource.
3. Click load button.
4. Load button will attempt to read the subresource's hp value, at which point Godot throws an error.

Minimal reproduction project

ResourceFormatLoaderText Bug.zip

[Calinou]

Duplicate of #67059, #15866 and/or #30572 (same cause).