RandomRange VisualShader Node throws error when connected to Varying Setter

[michaelharmonart]

Tested versions

Reproducible in 4.4 dev 7

System information

Godot v4.4.dev7 - Manjaro Linux #1 SMP PREEMPT_DYNAMIC Thu, 19 Dec 2024 20:32:41 +0000 on Wayland - X11 display driver, Multi-window, 1 monitor - OpenGL 3 (Compatibility) - NVIDIA GeForce RTX 3060 (nvidia; 565.77) - AMD Ryzen 9 9900X 12-Core Processor (24 threads)

Issue description

When the RandomRange node is only connected to a VaryingSetter like so:

The shader code is generated without the function definition as such:

When connected to the vertex color output as well for example:

It now generates correctly:

Seems as though the check for how to include the function needs to be aware of the VaryingSetter as well.

Hopefully it's an easy fix :)

Steps to reproduce

Connect a RandomRange Setter to a VaryingSetter in the Vertex Shader
Connect the VarryingGetter to the Albedo in the Fragment Shader

Check the generated shader code and notice the error from the lack of function definition.

Minimal reproduction project (MRP)

random-range.zip