### 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
}
	if (match(GDScriptTokenizer::Token::EXTENDS)) {
		if (n_class->extends_used) {
			push_error(R"(Cannot use "extends" more than once in the same class.)");
		}
		parse_extends();
		end_statement("superclass");
	}
	parse_class_body(multiline);
	complete_extents(n_class);
	if (multiline) {
		consume(GDScriptTokenizer::Token::DEDENT, R"(Missing unindent at the end of the class body.)");
	}
	current_class = previous_class;
	return n_class;
}
void GDScriptParser::parse_class_name() {
	if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected identifier for the global class name after "class_name".)")) {
		current_class->identifier = parse_identifier();
		current_class->fqcn = String(current_class->identifier->name);
	}
	if (match(GDScriptTokenizer::Token::EXTENDS)) {
		
		parse_extends();
		end_statement("superclass");
	} else {
		end_statement("class_name statement");
	}
}
void GDScriptParser::parse_extends() {