onRewarded loaded multiple times

Describe the bug Multiple rewards will be acquired when reward videos are shown in the second time.

To Reproduce Steps to reproduce the behavior:

1. Add codes

AdMob.showRewardVideoAd();
AdMob.addListener('onRewarded', (info) => {
console.log(info)
}

1. Initiate the reward
2. Initiate the reward the second time

Expected behavior Only one console.log is shown during the second time

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

Smartphone (please complete the following information): Android 10

Additional context Add any other context about the problem here.

[distante]

Your code is wrong.

Each time the user clicks your button you are creating a new listener. This should be called just one time outside onShowAdClick

AdMob.addListener('onRewarded', async (info: { type: string, amount: number }) => {
      console.log('info', info);
    })

[rdlabo]

Please move to constructor:

    AdMob.addListener('onRewardedVideoAdLoaded', () => {
      AdMob.showRewardVideoAd();
    });
    AdMob.addListener('onRewarded', async (info: { type: string, amount: number }) => {
      console.log('info', info);
    })

These should only be run once.