### 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
const gin_helper::Dictionary& options)
    : BaseWindow(args->isolate(), options) {
  InitWithArgs(args);
  
  window()->InitFromOptions(options);
}
BaseWindow::~BaseWindow() {
  if (!window_->IsClosed())
    window_->CloseImmediately();
  
  
  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, window_.release());
  
  self_ref_.Reset();
}
void BaseWindow::InitWith(v8::Isolate* isolate, v8::Local<v8::Object> wrapper) {
  AttachAsUserData(window_.get());
  gin_helper::TrackableObject<BaseWindow>::InitWith(isolate, wrapper);
  
  
  if (!parent_window_.IsEmpty()) {
    gin::Handle<BaseWindow> parent;
    gin::ConvertFromV8(isolate, GetParentWindow(), &parent);
    DCHECK(!parent.IsEmpty());
    parent->child_windows_.Set(isolate, weak_map_id(), wrapper);
  }
  
  self_ref_.Reset(isolate, wrapper);
}
void BaseWindow::WillCloseWindow(bool* prevent_default) {