### 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
AnnotationNode *annotation = const_cast<AnnotationNode *>(p_annotation);
	if (annotation->resolved_arguments.is_empty()) {
		return false;
	}
	annotation->export_info.name = annotation->resolved_arguments[0];
	switch (t_usage) {
		case PROPERTY_USAGE_CATEGORY: {
			annotation->export_info.usage = t_usage;
		} break;
		case PROPERTY_USAGE_GROUP: {
			annotation->export_info.usage = t_usage;
			if (annotation->resolved_arguments.size() == 2) {
				annotation->export_info.hint_string = annotation->resolved_arguments[1];
			}
		} break;
		case PROPERTY_USAGE_SUBGROUP: {
			annotation->export_info.usage = t_usage;
			if (annotation->resolved_arguments.size() == 2) {
				annotation->export_info.hint_string = annotation->resolved_arguments[1];
			}
		} break;
	}
	return true;
}
bool GDScriptParser::warning_annotations(const AnnotationNode *p_annotation, Node *p_node) {