https://m3.material.io/components/snackbar/guidelines
> 1. Add inline feedback
>
> Information in auto-dismissing snackbars must also be communicated using another accessible method inline or near the action that triggered the snackbar.
https://developer.android.com/reference/android/widget/Toast
Material Design Snackbars aren't toasts:
* Snackbars are local, toasts are global
* Toasts don't receive focus, snackbars can (via the optional action)
* Toasts auto-dismiss. This is optional for snackbars
* Snackbars can explicitly be dismissed early by a user
https://m3.material.io/components/snackbar/guidelines