Incorrect password with FUIEmailAuth dismisses view instead of alerting user

[PorterHoskins]

• Objective C or Swift: Swift
• iOS version: iOS 14.4
• Firebase SDK version: 7.7.0
• FirebaseUI version: 10.0.2
• CocoaPods Version: 1.10.1

Describe the problem:

When the user enters an incorrect password in the pre-build FirebaseUI authentication with the FUIEmailAuth provider the view controller dismisses itself instead of prompting the user with an error and allowing the user to re-enter a password.

Steps to reproduce:

1. Create a user with an email and password
2. Sign out
3. Enter the email for the previously created user
4. Enter an incorrect password for the user

Observed Results:

The FUIAuthDelegate is notified with an error:

The password is invalid or the user does not have a password." UserInfo={NSLocalizedDescription=The password is invalid or the user does not have a password., FIRAuthErrorUserInfoNameKey=ERROR_WRONG_PASSWORD}

Getting the error could allow the developer to show an alert but it would do no good since the view controller dismisses itself.

Expected Results:

The pre-built UI should prompt the user about the incorrect credentials with a UIAlertController and should not dismiss itself. The FUIAuthDelegate could still be notified but it isn't necessary.