### 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
.SetMethod("unhookAllWindowMessages",
                 &BaseWindow::UnhookAllWindowMessages)
      .SetMethod("setThumbnailClip", &BaseWindow::SetThumbnailClip)
      .SetMethod("setThumbnailToolTip", &BaseWindow::SetThumbnailToolTip)
      .SetMethod("setAppDetails", &BaseWindow::SetAppDetails)
#endif
      .SetProperty("id", &BaseWindow::GetID);
}
}  
}  
namespace {
using electron::api::BaseWindow;
void Initialize(v8::Local<v8::Object> exports,
                v8::Local<v8::Value> unused,
                v8::Local<v8::Context> context,
                void* priv) {
  v8::Isolate* isolate = context->GetIsolate();
  BaseWindow::SetConstructor(isolate, base::BindRepeating(&BaseWindow::New));
  gin_helper::Dictionary constructor(isolate,
                                     BaseWindow::GetConstructor(isolate)
                                         ->GetFunction(context)
                                         .ToLocalChecked());
  constructor.SetMethod("fromId", &BaseWindow::FromWeakMapID);
  constructor.SetMethod("getAllWindows", &BaseWindow::GetAll);
  gin_helper::Dictionary dict(isolate, exports);
  dict.Set("BaseWindow", constructor);
}
}  
NODE_LINKED_MODULE_CONTEXT_AWARE(electron_browser_base_window, Initialize)