Android hardware back button closes app after banner ad display

Describe the bug When I opened a new page and after that called banner.show() screen makes a lightning effect. After that banner ad shown. When I clicked header back button and I can go back without any problem. When I clicked hardware back button, app closed.

To Reproduce Steps to reproduce the behavior:

1. Go to a new page
2. this.banner = new admob.BannerAd({ adUnitId: 123, size: 0 });
3. await this.banner.show();
4. Click hardware back button.
5. App closed.

Expected behavior Go back to the previous page.

Screenshots If applicable, add screenshots to help explain your problem.

Environment

AdMob Plus Environment Info:
    npmPackages:
      admob-plus-cordova: ^1.7.0 => 1.8.2 
      cordova-android: ^9.0.0 => 9.1.0 
      cordova-ios: ^6.0.1 => 6.2.0 
      typescript: ~2.6.2 => 2.6.2 
    npmGlobalPackages:
      cordova: 10.0.0
    Cordova:
      Version: 10.0.0
      Plugins:
        cordova-plugin-device: ^2.0.3
        cordova-plugin-app-version: ^0.1.9
        cordova-plugin-statusbar: ^2.4.3
        cordova-plugin-splashscreen: ^5.0.3
        admob-plus-cordova: ^1.7.0
       
    Ionic:
      Version: 6.12.3```

[zeezonez]

@ratson

More information.

After the bannerads view added and shown (it take focus), then hardware buttons event will not fire. If user touch/tap/interact at app webview a few times, the app takes the focus back and the buttons works correctly.

[ratson]

@zeezonez @markenapps Thanks for confirming that.