### Godot version

4.0.beta13 (caacade56)

### System information

Windows 10

### Issue description

Seems like this was missed in #62011 and #70540. `@export_multiline` should also support the PackedStringArray datatype on top of Array[String] and Dictionary, but it doesn't, instead giving the error `"@export_multiline" annotation requires a variable of type "String" but type "PackedStringArray" was given instead.`

### Steps to reproduce

Create a PackedStringArray with the `@export_multiline` annotation.
```gdscript
@export_multiline var npc_dialog: PackedStringArray
```

### Minimal reproduction project

N/A
bool is_grabbing = false;
	for (int i = 0; i < 3; i++) {
		is_grabbing |= euler[i]->is_grabbing();
	}
	return is_grabbing;
}
void EditorPropertyQuaternion::update_property() {
	Quaternion val = get_edited_object()->get(get_edited_property());
	setting = true;
	spin[0]->set_value(val.x);
	spin[1]->set_value(val.y);
	spin[2]->set_value(val.z);
	spin[3]->set_value(val.w);
	if (!is_grabbing_euler()) {
		Vector3 v = val.normalized().get_euler();
		edit_euler.x = Math::rad_to_deg(v.x);
		edit_euler.y = Math::rad_to_deg(v.y);
		edit_euler.z = Math::rad_to_deg(v.z);
		euler[0]->set_value(edit_euler.x);
		euler[1]->set_value(edit_euler.y);
		euler[2]->set_value(edit_euler.z);
	}
	setting = false;
}
void EditorPropertyQuaternion::_warning_pressed() {