### Godot version

4.0.beta13

### System information

Linux Vulkan (but issue is renderer indepenent)

### Issue description

It looks like `PackedColorArray` (and possibly other packed arrays) properties don't get copied deeply enough when doing "make unique" (even recursive, though this shouldn't matter as these aren't subresources).

A project save/reload makes this visible, and also returns the behavior to expected from then on (until you try to do the same thing again, that is).

See reproduction steps below.

Edit: I'm actually unsure this is a problem with these types of properties *in general* or just when they are shader properties. I didn't assume this would make a difference, but couldn't find any other classes taking these, to test.

### Steps to reproduce

- Uncompress and open the project from repro8.zip

![repro8-a](https://user-images.githubusercontent.com/43048142/213869943-7cf9dddb-cdb2-4632-816a-58aeb8582f1c.png)

- Duplicate the "Label" node
- Go to "Material", do "Make Unique"  on the ShaderMaterial (you can choose recursive, it won't make a difference)
- Change the colors on the duplicated material. So far so good!

![repro8-b](https://user-images.githubusercontent.com/43048142/213869961-faeb3f14-6d99-40b2-b2ae-3a9c74f0a0b7.png)

- Now, save and reload the project.
- Oops! The original label has the same colors as the duplicated and modified one now, as if unique-ification never happened.

![repro8-c](https://user-images.githubusercontent.com/43048142/213869997-d234b149-9005-4acd-9f6c-b3851fec9c79.png)

- Change the colors on the duplicated material again.
- Save, and reload the project again.

![repro8-d](https://user-images.githubusercontent.com/43048142/213870009-306e2025-c054-42aa-81ba-2b299d799853.png)


- No unexpected changes. Everything is fine from now on.

### Minimal reproduction project

[repro8.zip](https://github.com/godotengine/godot/files/10472283/repro8.zip)

set_path(p_path, false);
}
void Resource::_take_over_path(const String &p_path) {
	set_path(p_path, true);
}
RID Resource::get_rid() const {
	if (get_script_instance()) {
		Callable::CallError ce;
		RID ret = get_script_instance()->callp(SNAME("_get_rid"), nullptr, 0, ce);
		if (ce.error == Callable::CallError::CALL_OK && ret.is_valid()) {
			return ret;
		}
	}
	if (_get_extension() && _get_extension()->get_rid) {
		RID ret;
		ret.from_uint64(_get_extension()->get_rid(_get_extension_instance()));
		if (ret.is_valid()) {
			return ret;
		}
	}
	return RID();
}
void Resource::register_owner(Object *p_owner) {
	owners.insert(p_owner->get_instance_id());
}
void Resource::unregister_owner(Object *p_owner) {
	owners.erase(p_owner->get_instance_id());
}
void Resource::notify_change_to_owners() {