[FR][Phone Auth] Add capability to auto-proceed after user enters last digit of SMS code

[willbattel]

[FR][Phone Auth] Add capability to auto-proceed after user enters last digit of SMS code

[willbattel]

Took a screenshot showing how the text notification covers the Next button, requiring the user to either wait a few seconds for the notification to disappear or swiping the notification away. Neither option is ideal, especially considering the fact that the user often doesn't realize where the Next button is before receiving the notification, leading to momentary confusion on how to proceed.

[willbattel]

Another option would be to move the Next button to (or add another one) below the "Resend code" label and above the keyboard. I'd still prefer the auto-proceed on code completion but this would at least reduce confusion.