fix(firebase_ui_auth): wrap email_link_sign_in_screen.dart with FirebaseUIActions

[ospar0829]

Solution for bug #31

Description

This PR addresses a bug in the EmailLinkSignInScreen by wrapping the UniversalScaffold widget with the FirebaseUIActions widget. The modification ensures that FirebaseUI actions are executed. Previously, the UniversalScaffold did not include Firebase UI actions, which led to actions not be executed

Related Issues

Bugfix for issue #31. This PR resolves the issue by ensuring that FirebaseUIActions are integrated, thus enabling proper handling of Firebase-related actions within the EmailLinkSignInScreen.

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