Update ToastAndroid with changes in Android 11

[pafry7]

showWithGravity and showWithGravityAndOffset from ToastAndroid does not work for text toasts as of Android 11. ToastModule uses setGravity which is no-op. More information can be found here:

• setGravity docs
• Updates to toasts in Android 11

An alternative implementation could use setView, but:

1. It is depracated
2. Custom toasts from the background are blocked

Android documentation specifies snackbar and notifications as alternatives to toasts. link