### 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)

StringName *r = _remap(p_name);
	if (r) {
		Override *o = overrides.getptr(*r);
		if (!o) {
			Override ov;
			ov.in_use = false;
			overrides[*r] = ov;
			o = overrides.getptr(*r);
		}
		if (o) {
			o->override = p_value;
			if (active) {
				if (o->override.get_type() == Variant::OBJECT) {
					RID tex_rid = p_value;
					RS::get_singleton()->global_shader_parameter_set_override(*r, tex_rid);
				} else {
					RS::get_singleton()->global_shader_parameter_set_override(*r, p_value);
				}
			}
			o->in_use = p_value.get_type() != Variant::NIL;
			return true;
		}
	}
	return false;
}
bool ShaderGlobalsOverride::_get(const StringName &p_name, Variant &r_ret) const {