### 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
}
EditorPropertyNil::EditorPropertyNil() {
	Label *prop_label = memnew(Label);
	prop_label->set_text("<null>");
	add_child(prop_label);
}
void EditorPropertyText::_set_read_only(bool p_read_only) {
	text->set_editable(!p_read_only);
}
void EditorPropertyText::_text_submitted(const String &p_string) {