### 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
option_button->set_disabled(p_read_only);
	edit_button->set_disabled(p_read_only);
}
void EditorPropertyTextEnum::_emit_changed_value(String p_string) {
	if (string_name) {
		emit_changed(get_edited_property(), StringName(p_string));
	} else {
		emit_changed(get_edited_property(), p_string);
	}
}
void EditorPropertyTextEnum::_option_selected(int p_which) {
	_emit_changed_value(option_button->get_item_text(p_which));
}
void EditorPropertyTextEnum::_edit_custom_value() {
	default_layout->hide();
	edit_custom_layout->show();
	custom_value_edit->grab_focus();
}
void EditorPropertyTextEnum::_custom_value_submitted(String p_value) {
	edit_custom_layout->hide();
	default_layout->show();
	_emit_changed_value(p_value.strip_edges());
}
void EditorPropertyTextEnum::_custom_value_accepted() {
	String new_value = custom_value_edit->get_text().strip_edges();
	_custom_value_submitted(new_value);
}
void EditorPropertyTextEnum::_custom_value_canceled() {