### 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)

} else if (p_name == "params_depth_draw_mode") {
		int mode = p_value;
		if (mode == 3) {
			set_transparency(TRANSPARENCY_ALPHA_DEPTH_PRE_PASS);
		}
		return true;
	} else if (p_name == "depth_enabled") {
		bool enabled = p_value;
		if (enabled) {
			set_feature(FEATURE_HEIGHT_MAPPING, true);
			set_flag(FLAG_INVERT_HEIGHTMAP, true);
		}
		return true;
	} else {
		static const Pair<const char *, const char *> remaps[] = {
			{ "flags_use_shadow_to_opacity", "shadow_to_opacity" },
			{ "flags_use_shadow_to_opacity", "shadow_to_opacity" },
			{ "flags_no_depth_test", "no_depth_test" },
			{ "flags_use_point_size", "use_point_size" },
			{ "flags_fixed_size", "fixed_Size" },
			{ "flags_albedo_tex_force_srgb", "albedo_texture_force_srgb" },
			{ "flags_do_not_receive_shadows", "disable_receive_shadows" },
			{ "flags_disable_ambient_light", "disable_ambient_light" },
			{ "params_diffuse_mode", "diffuse_mode" },
			{ "params_specular_mode", "specular_mode" },
			{ "params_blend_mode", "blend_mode" },
			{ "params_cull_mode", "cull_mode" },
			{ "params_depth_draw_mode", "params_depth_draw_mode" },
			{ "params_point_size", "point_size" },
			{ "params_billboard_mode", "billboard_mode" },