InterstitialAd.isLoaded return an object instead of Promise<boolean> admob-plus-cordova 2.0.0-alpha.13

Describe the bug I used to execute InterstitialAd.isLoaded checking whether or not the InterstitialAd was loaded without any issues. Recently, after upgrade to the latest version admob-plus-cordova 2.0.0-alpha.13 the isLoaded() return an object instead. So how do I check if the InterstitialAd is loaded or not ? Return objects are as follows: zone_symbolstate : null zone_symbolvalue : Array(4) 0: v {_parent: v, _name: 'angular', _properties: {…}, _zoneDelegate: v} 1: l {zone_symbolstate: null, zone_symbolvalue: Array(0)} 2: Z=> {…} 3: undefined length: 4 [Prototype] : Array(0) Symbol(Symbol.species) : (...) Symbol(Symbol.toStringTag) : (...)

To Reproduce Steps to reproduce the behavior:

Go to '...'
Click on '....'
Scroll down to '....'
See error

Expected behavior InterstitialAd.isLoaded should return Promise as the previous version

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

Environment Ionic 7 cordova, use cordova without Ionic wrapper.

 AdMob Plus Environment Info:
    System:
      OS: Windows 10 10.0.19045
      CPU: (8) x64 Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
      Memory: 7.16 GB / 15.80 GB
    Binaries:
      Node: 16.13.2 - E:\Program Files\nodejs\node.EXE
      npm: 8.5.3 - E:\Program Files\nodejs\npm.CMD
    Languages:
      Java: 17.0.8
    npmPackages:
      admob-plus-cordova: 2.0.0-alpha.13 => 2.0.0-alpha.13
      cordova: ^11.1.0 => 11.1.0
      cordova-android: ^12.0.1 => 12.0.1
      cordova-ios: ^6.3.0 => 6.3.0
      cordova-plugin-add-swift-support: ^2.0.2 => 2.0.2
      cordova-plugin-advanced-http: ^3.3.1 => 3.3.1
      cordova-plugin-app-version: ^0.1.14 => 0.1.14
      cordova-plugin-device: github:apache/cordova-plugin-device => 2.1.1-dev
      cordova-plugin-inappbrowser: ^5.0.0 => 5.0.0
      cordova-plugin-ionic-keyboard: ^2.2.0 => 2.2.0
      cordova-plugin-ionic-webview: ^5.0.1 => 5.0.1
      cordova-plugin-nativeaudio: ^3.0.9 => 3.0.9
      cordova-plugin-nativeclicksound: 0.0.4 => 0.0.4
      cordova-plugin-network-information: github:apache/cordova-plugin-network-information => 3.0.1-dev
      cordova-plugin-purchase: ^13.5.0 => 13.8.0
      cordova-plugin-screen-orientation: ^3.0.3 => 3.0.3
      cordova-plugin-splashscreen: ^5.0.4 => 5.0.4
      cordova-plugin-statusbar: ^2.4.2 => 2.4.3
      cordova-plugin-x-socialsharing: ^6.0.4 => 6.0.4
      cordova-simple-volume: ^1.0.4 => 1.0.4
      cordova-sqlite-storage: ^4.0.0 => 4.0.0
      cordova.plugins.diagnostic: ^7.1.1 => 7.1.2
      phonegap-plugin-mobile-accessibility: ^1.0.5 => 1.0.5
      typescript: ~4.9.5 => 4.9.5
    Cordova:
      Version: 11.1.0
      Plugins:
        cordova-plugin-statusbar: ^2.4.2
        cordova-plugin-splashscreen: ^5.0.4
        cordova-plugin-ionic-keyboard: ^2.2.0
        cordova-sqlite-storage: ^4.0.0
        cordova-plugin-screen-orientation: ^3.0.3
        cordova-plugin-nativeclicksound: 0.0.4
        cordova-plugin-nativeaudio: ^3.0.9
        cordova-plugin-device: github:apache/cordova-plugin-device
        phonegap-plugin-mobile-accessibility: ^1.0.5
        cordova-plugin-network-information: github:apache/cordova-plugin-network-information
        cordova-plugin-advanced-http: ^3.3.1
        cordova-plugin-app-version: ^0.1.14
        cordova-plugin-x-socialsharing: ^6.0.4
        cordova-simple-volume: ^1.0.4
        cordova.plugins.diagnostic: ^7.1.1
        cordova-plugin-purchase: ^13.5.0
        cordova-plugin-add-swift-support: ^2.0.2
        cordova-plugin-inappbrowser: ^5.0.0
        cordova-plugin-ionic-webview: ^5.0.1
        admob-plus-cordova: 2.0.0-alpha.13
    Ionic:
      Version: 6.18.1
    AndroidManifest.xml:
      Version: -

Additional context Add any other context about the problem here.

admob-plus / admob-plus

InterstitialAd.isLoaded return an object instead of Promise<boolean> admob-plus-cordova 2.0.0-alpha.13 #623