### 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)

if (shader.is_valid()) {
		const StringName *pr = remap_cache.getptr(p_name);
		if (pr) {
			Variant default_value = RenderingServer::get_singleton()->shader_get_parameter_default(shader->get_rid(), *pr);
			Variant current_value = get_shader_parameter(*pr);
			return default_value.get_type() != Variant::NIL && default_value != current_value;
		}
	}
	return false;
}
bool ShaderMaterial::_property_get_revert(const StringName &p_name, Variant &r_property) const {