### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/main/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/main/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

15.2.0

### What operating system are you using?

Windows

### Operating System Version

Windows 10 version 20H2

### What arch are you using?

x64

### Last Known Working Electron version

15.1.2

### Expected Behavior

Apply `setContentProtection` function without any effects on the application window behavior on `browser-window-created` event.

### Actual Behavior

When `setContentProtection` function is called on `browser-window-created` event, the application window form will changed when the focus is backed.  The value of the argument of `setContentProtection` has no effect on the result.
![setContentProtectionIssue](https://user-images.githubusercontent.com/441950/140640295-ca25b82d-d36b-4101-b38e-b8def46bab3e.gif)



### Testcase Gist URL

https://gist.github.com/KazuyaHayashi/33372ae657dde602e68fdb50aabafa31

### Additional Information

When I call `setContentProtection` just after creating `BrowserWindow`, this issue does not happen. But I want to set contents protection on each windows which are created by `new-window` event. Therefor, I have called `setContentProtection` function on `browser-window-created` event.
shell/browser/native_window_views.cc
options.Get(options::kWidth, &width);
  options.Get(options::kHeight, &height);
  gfx::Rect bounds(0, 0, width, height);
  widget_size_ = bounds.size();
  widget()->AddObserver(this);
  views::Widget::InitParams params;
  params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
  params.bounds = bounds;
  params.delegate = this;
  params.type = views::Widget::InitParams::TYPE_WINDOW;
  params.remove_standard_frame = !has_frame();
  if (transparent())
    params.opacity = views::Widget::InitParams::WindowOpacity::kTranslucent;
  
  
  if (transparent() && !has_frame())
    params.shadow_type = views::Widget::InitParams::ShadowType::kNone;
  bool focusable;
  if (options.Get(options::kFocusable, &focusable) && !focusable)
    params.activatable = views::Widget::InitParams::Activatable::kNo;
#if defined(OS_WIN)
  if (parent)
    params.parent = parent->GetNativeWindow();
  params.native_widget = new ElectronDesktopNativeWidgetAura(this);
#elif defined(OS_LINUX)
  std::string name = Browser::Get()->GetName();
  
  params.wm_role_name = "browser-window";
  
  params.wm_class_name = base::ToLowerASCII(name);