### Godot version

v4.1.dev.custom_build.a7276f1ce

### System information

Win10, AMD 2600, GeForce GTX 1060, Vulkan API 1.3.205

### Issue description

I can't get correct color data from an array of source_color type.
The color data is saved as **Color** in the file:
`shader_parameter/palette = [Color (1, 0, 0, 1), Color (0, 1, 0, 1), Color (0, 0, 1, 1)]`
Shouldn't it be saved as PackedColorArray?


### Steps to reproduce

1.Declare an array of source_color type.
2.Set colors.

### Minimal reproduction project

[shadertest.zip](https://github.com/godotengine/godot/files/11246504/shadertest.zip)

#include "shader_globals_override.h"
#include "scene/3d/node_3d.h"
#include "scene/scene_string_names.h"
StringName *ShaderGlobalsOverride::_remap(const StringName &p_name) const {
	StringName *r = param_remaps.getptr(p_name);
	if (!r) {
		
		String p = p_name;
		if (p.begins_with("params/")) {
			String q = p.replace_first("params/", "");
			param_remaps[p] = q;
			r = param_remaps.getptr(q);
		}
	}
	return r;
}
bool ShaderGlobalsOverride::_set(const StringName &p_name, const Variant &p_value) {