### 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_null()) {
		List<PropertyInfo> list;
		shader->get_shader_uniform_list(&list, true);
		HashMap<String, HashMap<String, List<PropertyInfo>>> groups;
		LocalVector<Pair<String, LocalVector<String>>> vgroups;
		{
			HashMap<String, List<PropertyInfo>> none_subgroup;
			none_subgroup.insert("<None>", List<PropertyInfo>());
			groups.insert("<None>", none_subgroup);
		}
		String last_group = "<None>";
		String last_subgroup = "<None>";
		bool is_none_group_undefined = true;
		bool is_none_group = true;
		for (List<PropertyInfo>::Element *E = list.front(); E; E = E->next()) {
			if (E->get().usage == PROPERTY_USAGE_GROUP) {
				if (!E->get().name.is_empty()) {
					Vector<String> vgroup = E->get().name.split("::");
					last_group = vgroup[0];
					if (vgroup.size() > 1) {
						last_subgroup = vgroup[1];
					} else {
						last_subgroup = "<None>";
					}
					is_none_group = false;
					if (!groups.has(last_group)) {
						PropertyInfo info;
						info.usage = PROPERTY_USAGE_GROUP;
						info.name = last_group.capitalize();
						info.hint_string = "shader_parameter/";