### 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
value_type = subtype;
			}
			if (value_type == Variant::OBJECT && Object::cast_to<EncodedObjectAsID>(value)) {
				EditorPropertyObjectID *editor = memnew(EditorPropertyObjectID);
				editor->setup("Object");
				prop = editor;
			} else {
				prop = EditorInspector::instantiate_property_editor(nullptr, value_type, "", subtype_hint, subtype_hint_string, PROPERTY_USAGE_NONE);
			}
			prop->set_object_and_property(object.ptr(), prop_name);
			prop->set_label(itos(i + offset));
			prop->set_selectable(false);
			prop->set_use_folding(is_using_folding());
			prop->connect("property_changed", callable_mp(this, &EditorPropertyArray::_property_changed));
			prop->connect("object_id_selected", callable_mp(this, &EditorPropertyArray::_object_id_selected));
			prop->set_h_size_flags(SIZE_EXPAND_FILL);
			prop->set_read_only(is_read_only());
			hbox->add_child(prop);
			bool is_untyped_array = array.get_type() == Variant::ARRAY && subtype == Variant::NIL;
			if (is_untyped_array) {
				Button *edit_btn = memnew(Button);
				edit_btn->set_icon(get_theme_icon(SNAME("Edit"), SNAME("EditorIcons")));
				hbox->add_child(edit_btn);
				edit_btn->set_disabled(is_read_only());
				edit_btn->connect("pressed", callable_mp(this, &EditorPropertyArray::_change_type).bind(edit_btn, i + offset));
			} else {
				Button *remove_btn = memnew(Button);
				remove_btn->set_icon(get_theme_icon(SNAME("Remove"), SNAME("EditorIcons")));
				remove_btn->set_disabled(is_read_only());
				remove_btn->connect("pressed", callable_mp(this, &EditorPropertyArray::_remove_pressed).bind(i + offset));