### 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
clear();
}
void GDScriptParser::clear() {
	while (list != nullptr) {
		Node *element = list;
		list = list->next;
		memdelete(element);
	}
	head = nullptr;
	list = nullptr;
	_is_tool = false;
	for_completion = false;
	errors.clear();
	multiline_stack.clear();
	nodes_in_progress.clear();
}
void GDScriptParser::push_error(const String &p_message, const Node *p_origin) {
	
	
	panic_mode = true;
	
	if (p_origin == nullptr) {
		errors.push_back({ p_message, current.start_line, current.start_column });
	} else {
		errors.push_back({ p_message, p_origin->start_line, p_origin->leftmost_column });
	}
}
#ifdef DEBUG_ENABLED
void GDScriptParser::push_warning(const Node *p_source, GDScriptWarning::Code p_code, const Vector<String> &p_symbols) {