### Feature request

`customButtonsOnHover` fixes a lot of issues with drag and `pointer` styles, but my app currently uses `hidden-inset` so this setting changes the position of the buttons. I'd suggest `customButtonsOnHover` either be an option outside of `titleBarStyle` that respects `titleBarStyle`s values ('hiddenInset' or `hidden') or the addition of a `customButtonsOnHoverInset`.

As a separate note, the docs for `customButtonsOnHover` currently specify it's a Boolean type, but it's a string value.
shell/browser/api/electron_api_base_window.cc
return window_->SetContentProtection(enable);
}
void BaseWindow::SetFocusable(bool focusable) {
  return window_->SetFocusable(focusable);
}
void BaseWindow::SetMenu(v8::Isolate* isolate, v8::Local<v8::Value> value) {
  auto context = isolate->GetCurrentContext();
  gin::Handle<Menu> menu;
  v8::Local<v8::Object> object;
  if (value->IsObject() && value->ToObject(context).ToLocal(&object) &&
      gin::ConvertFromV8(isolate, value, &menu) && !menu.IsEmpty()) {
    menu_.Reset(isolate, menu.ToV8());
    
    
    if (menu->model()->GetItemCount() == 0) {
      RemoveMenu();
    } else {
      window_->SetMenu(menu->model());
    }
  } else if (value->IsNull()) {
    RemoveMenu();
  } else {
    isolate->ThrowException(
        v8::Exception::TypeError(gin::StringToV8(isolate, "Invalid Menu")));
  }
}
void BaseWindow::RemoveMenu() {