### 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_->IsNormal();
}
gfx::Rect BaseWindow::GetNormalBounds() {
  return window_->GetNormalBounds();
}
void BaseWindow::SetContentBounds(const gfx::Rect& bounds,
                                  gin_helper::Arguments* args) {
  bool animate = false;
  args->GetNext(&animate);
  window_->SetContentBounds(bounds, animate);
}
gfx::Rect BaseWindow::GetContentBounds() {
  return window_->GetContentBounds();
}
void BaseWindow::SetSize(int width, int height, gin_helper::Arguments* args) {
  bool animate = false;
  gfx::Size size = window_->GetMinimumSize();
  size.SetToMax(gfx::Size(width, height));
  args->GetNext(&animate);
  window_->SetSize(size, animate);
}
std::vector<int> BaseWindow::GetSize() {
  std::vector<int> result(2);
  gfx::Size size = window_->GetSize();
  result[0] = size.width();
  result[1] = size.height();
  return result;
}
void BaseWindow::SetContentSize(int width,