### 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
string_name = p_string_name;
	loose_mode = p_loose_mode;
	options.clear();
	if (loose_mode) {
		
		option_button->add_item("", options.size() + 1000);
	}
	for (int i = 0; i < p_options.size(); i++) {
		options.append(p_options[i]);
		option_button->add_item(p_options[i], i);
	}
	if (loose_mode) {
		edit_button->show();
	}
}
void EditorPropertyTextEnum::_bind_methods() {