### 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
checkbox->set_disabled(p_read_only);
}
void EditorPropertyCheck::_checkbox_pressed() {
	emit_changed(get_edited_property(), checkbox->is_pressed());
}
void EditorPropertyCheck::update_property() {
	bool c = get_edited_object()->get(get_edited_property());
	checkbox->set_pressed(c);
	checkbox->set_disabled(is_read_only());
}
void EditorPropertyCheck::_bind_methods() {
}
EditorPropertyCheck::EditorPropertyCheck() {
	checkbox = memnew(CheckBox);
	checkbox->set_text(TTR("On"));
	add_child(checkbox);
	add_focusable(checkbox);
	checkbox->connect("pressed", callable_mp(this, &EditorPropertyCheck::_checkbox_pressed));
}
void EditorPropertyEnum::_set_read_only(bool p_read_only) {
	options->set_disabled(p_read_only);
}
void EditorPropertyEnum::_option_selected(int p_which) {
	int64_t val = options->get_item_metadata(p_which);
	emit_changed(get_edited_property(), val);
}
void EditorPropertyEnum::update_property() {