Vector2i unable to deserialize when loading from a file

[RetroZelda]

Tested versions

• Reproducable in 4.3 and 4.4

System information

Debian Trixie - Kernel 6.12.9-amd64

Issue description

When serializing a Vector2i into a dictionary to save into a file, to then be reloaded later, a "unable to convert a string to a vector2i" error occurs. As a built-in type I expected full serialization and deserialization to function, but the workaround of saving each X and Y component individually is fine, but it seems a bit unnessisary

Steps to reproduce

run included example

Minimal reproduction project (MRP)

main.gd.txt

[quinnyo]

JSON only supports basic Javascript types. To "fully" serialise a struct, a conversion step is necessary. This is provided for Godot's types in JSON.to_native and JSON.from_native.