[BUG] CVC text does not hide in CardMultilineWidget

[litmon]

Summary

When I used CardMultilineWidget in my app, CVC text did not hide.

I think that it should be inputType = InputType.TYPE_CLASS_NUMBER or InputType.TYPE_NUMBER_VARIATION_PASSWORD.
https://github.com/stripe/stripe-android/blame/b283ba421a89756d22e9ed986b9bc249e7adcfad/payments-core/src/main/java/com/stripe/android/view/CvcEditText.kt#L46

It pointed out by #2897 (comment) , but it's not.

Code to reproduce

Android version

Impacted devices

Installation method

Dependency Versions

kotlin: 1.5.30
stripe-android: 17.2.0
Android Gradle Plugin: 7.0.0
Gradle: 7.0.2

SDK classes

CardMultilineWidget
CvcEditText

Video

Other information

[michelleb-stripe]

@litmon We will take a look

[michelleb-stripe]

@litmon The CVC digits are not hidden like a password would be by design. Any non-numeric characters entered on the software keyboard are ignored.

However, we have implemented a fix so that the number pad that is brought up only contains numbers.