### 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 bug report that matches the one I want to file, without success.

### Electron Version

18.0.3

### What operating system are you using?

Windows

### Operating System Version

Windows 10

### What arch are you using?

x64

### Last Known Working Electron version

18.0.0

### Expected Behavior

After entering and exiting fullscreen from an iframe and then focusing the parent page, <kbd>Escape</kbd> key events should be delivered to the parent page.

### Actual Behavior

<kbd>Escape</kbd> key events seem not to be delivered to the page after exiting fullscreen.

https://user-images.githubusercontent.com/172800/162848678-c067d18a-e323-49ea-a6b3-f1526149cad1.mp4




### Testcase Gist URL

https://gist.github.com/bc382eeeb368b70fbed1e177bcaacfde

### Additional Information

This only reproduces on Windows, not on macOS.

Also, this only reproduces when _clicking_ the "exit fullscreen" button in the YouTube embed. Pressing <kbd>Esc</kbd> to exit fullscreen allows the parent page to receive subsequent key events.

18.0.0 - not reproducible
18.0.1 - reproducible
18.0.2 - reproducible
18.0.3 - reproducible

This seems likely to be related to https://github.com/electron/electron/pull/32369. cc @codebytere 
shell/browser/api/electron_api_web_contents.cc
const std::string& content,
                                     bool save_as) {
  base::FilePath path;
  auto it = saved_files_.find(url);
  if (it != saved_files_.end() && !save_as) {
    path = it->second;
  } else {
    file_dialog::DialogSettings settings;
    settings.parent_window = owner_window();
    settings.force_detached = offscreen_;
    settings.title = url;
    settings.default_path = base::FilePath::FromUTF8Unsafe(url);
    if (!file_dialog::ShowSaveDialogSync(settings, &path)) {
      base::Value url_value(url);
      inspectable_ontents_->CallClientFunction(
          "DevToolsAPI.canceledSaveURL", &url_value, nullptr, nullptr);
      return;
    }
  }
  saved_files_[url] = path;
   Notify DevTools.
  base::Value url_value(url);
  base::Value file_system_path_value(path.AsUTF8Unsafe());
  inspectable_ontents_->CallClientFunction(
      "DevToolsAPI.savedURL", &url_value, &file_system_path_value, nullptr);
  file_task_runner_->PostTask(FROM_HERE,
                              base::BindOnce(&WriteToFile, path, content));
}
void WebContents::DevToolsAppendToFile(const std::string& url,