### 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
consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "for" condition.)");
	
	bool could_break = can_break;
	bool could_continue = can_continue;
	
	can_break = true;
	can_continue = true;
	SuiteNode *suite = alloc_node<SuiteNode>();
	if (n_for->variable) {
		const SuiteNode::Local &local = current_suite->get_local(n_for->variable->name);
		if (local.type != SuiteNode::Local::UNDEFINED) {
			push_error(vformat(R"(There is already a %s named "%s" declared in this scope.)", local.get_name(), n_for->variable->name), n_for->variable);
		}
		suite->add_local(SuiteNode::Local(n_for->variable, current_function));
	}
	n_for->loop = parse_suite(R"("for" block)", suite);
	n_for->loop->is_loop = true;
	complete_extents(n_for);
	
	can_break = could_break;
	can_continue = could_continue;
	return n_for;
}
GDScriptParser::IfNode *GDScriptParser::parse_if(const String &p_token) {
	IfNode *n_if = alloc_node<IfNode>();
	n_if->condition = parse_expression(false);
	if (n_if->condition == nullptr) {
		push_error(vformat(R"(Expected conditional expression after "%s".)", p_token));
	}
	consume(GDScriptTokenizer::Token::COLON, vformat(R"(Expected ":" after "%s" condition.)", p_token));