### 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
push_text("(");
	switch (p_unary_op->operation) {
		case UnaryOpNode::OP_POSITIVE:
			push_text("+");
			break;
		case UnaryOpNode::OP_NEGATIVE:
			push_text("-");
			break;
		case UnaryOpNode::OP_LOGIC_NOT:
			push_text("NOT");
			break;
		case UnaryOpNode::OP_COMPLEMENT:
			push_text("~");
			break;
	}
	print_expression(p_unary_op->operand);
	
	push_text(")");
}
void GDScriptParser::TreePrinter::print_variable(VariableNode *p_variable) {