### 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
new_item_key = p_new_item;
}
Variant EditorPropertyDictionaryObject::get_new_item_key() {
	return new_item_key;
}
void EditorPropertyDictionaryObject::set_new_item_value(const Variant &p_new_item) {
	new_item_value = p_new_item;
}
Variant EditorPropertyDictionaryObject::get_new_item_value() {
	return new_item_value;
}
EditorPropertyDictionaryObject::EditorPropertyDictionaryObject() {
}
void EditorPropertyArray::initialize_array(Variant &p_array) {
	if (array_type == Variant::ARRAY && subtype != Variant::NIL) {
		Array array;
		StringName subtype_class;
		Ref<Script> subtype_script;
		if (subtype == Variant::OBJECT && !subtype_hint_string.is_empty()) {
			if (ClassDB::class_exists(subtype_hint_string)) {
				subtype_class = subtype_hint_string;
			}
		}
		array.set_typed(subtype, subtype_class, subtype_script);
		p_array = array;
	} else {
		VariantInternal::initialize(&p_array, array_type);
	}
}
void EditorPropertyArray::_property_changed(const String &p_property, Variant p_value, const String &p_name, bool p_changing) {