### 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 (p_is_elif) {
		push_text("Elif ");
	} else {
		push_text("If ");
	}
	print_expression(p_if->condition);
	push_line(" :");
	increase_indent();
	print_suite(p_if->true_block);
	decrease_indent();
	
	if (p_if->false_block != nullptr) {
		push_line("Else :");
		increase_indent();
		print_suite(p_if->false_block);
		decrease_indent();
	}
}
void GDScriptParser::TreePrinter::print_lambda(LambdaNode *p_lambda) {
	print_function(p_lambda->function, "Lambda");
	push_text("| captures [ ");
	for (int i = 0; i < p_lambda->captures.size(); i++) {
		if (i > 0) {
			push_text(" , ");
		}
		push_text(p_lambda->captures[i]->name.operator String());
	}
	push_line(" ]");
}
void GDScriptParser::TreePrinter::print_literal(LiteralNode *p_literal) {