### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

13.1.2

### What operating system are you using?

macOS

### Operating System Version

macOS Big Sur 11.4

### What arch are you using?

x64

### Last Known Working Electron version

11.4.5

### Expected Behavior

  - create the main window with `show: false` option
  - create the child window with a loading spinner and show it immediately
  - after 10 sec hide the child window and show the main one

### Actual Behavior

The main window is shown along with the child window, disregarding the `show: false` flag. This behavior is seen only on macOS.

### Testcase Gist URL

https://gist.github.com/f2a3a5e8d9130223f18b8ddade390f20

### Additional Information

_No response_
shell/browser/api/electron_api_base_window.cc
return window_->GetZOrderLevel() != ui::ZOrderLevel::kNormal;
}
void BaseWindow::Center() {
  window_->Center();
}
void BaseWindow::SetPosition(int x, int y, gin_helper::Arguments* args) {
  bool animate = false;
  args->GetNext(&animate);
  window_->SetPosition(gfx::Point(x, y), animate);
}
std::vector<int> BaseWindow::GetPosition() {
  std::vector<int> result(2);
  gfx::Point pos = window_->GetPosition();
  result[0] = pos.x();
  result[1] = pos.y();
  return result;
}
void BaseWindow::MoveAbove(const std::string& sourceId,
                           gin_helper::Arguments* args) {
#if BUILDFLAG(ENABLE_DESKTOP_CAPTURER)
  if (!window_->MoveAbove(sourceId))
    args->ThrowError("Invalid media source id");
#else
  args->ThrowError("enable_desktop_capturer=true to use this feature");
#endif
}
void BaseWindow::MoveTop() {