### 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)

is_none_group_undefined = false;
				PropertyInfo info;
				info.usage = PROPERTY_USAGE_GROUP;
				info.name = "Shader Parameters";
				info.hint_string = "shader_parameter/";
				groups["<None>"]["<None>"].push_back(info);
				vgroups.push_back(Pair<String, LocalVector<String>>("<None>", { "<None>" }));
			}
			PropertyInfo info = E->get();
			info.name = "shader_parameter/" + info.name;
			if (!param_cache.has(E->get().name)) {
				
				Variant default_value = RenderingServer::get_singleton()->shader_get_parameter_default(shader->get_rid(), E->get().name);
				param_cache.insert(E->get().name, default_value);
				remap_cache.insert(info.name, E->get().name);
			}
			groups[last_group][last_subgroup].push_back(info);
		}
		for (const Pair<String, LocalVector<String>> &group_pair : vgroups) {
			String group = group_pair.first;
			for (const String &subgroup : group_pair.second) {
				List<PropertyInfo> &prop_infos = groups[group][subgroup];
				for (List<PropertyInfo>::Element *item = prop_infos.front(); item; item = item->next()) {
					p_list->push_back(item->get());
				}
			}
		}
	}
}
bool ShaderMaterial::_property_can_revert(const StringName &p_name) const {