Apple rejection - We still noticed that the user is taken to the default web browser to sign in or register for an account, which provides a poor user experience.

## Issue
Apple rejected with below reason today. Please review and recommend the next step.

Guideline 4.0 - Design

We still noticed that the user is taken to the default web browser to sign in or register for an account, which provides a poor user experience.

Next Steps
To resolve this issue, please revise your app to enable users to sign in or register for an account in the app.
You may also choose to implement the Safari View Controller API to display web content within your app. The Safari View Controller allows the display of a URL and inspection of the certificate from an embedded browser in an app so that customers can verify the webpage URL and SSL certificate to confirm they are entering their sign in credentials into a legitimate page.

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## Environment
* **Your Identity Provider**: `Azure`
* **Platform that you're experiencing the issue on**: `iOS`
* **Your `react-native` Version**: `~0.73.7`
* **Your `react-native-app-auth` Version**: `^7.1.3`
* **Are you using Expo?** No

Commencez par examiner le flux d’authentification iOS dans react-native-app-auth et la façon dont la connexion Azure ouvre actuellement le navigateur web par défaut. Comparez le comportement disponible d’AppAuth avec Safari View Controller, puis vérifiez que la connexion et l’inscription restent dans l’application et satisfont à l’exigence énoncée par Apple.

Rédigé par le modèle d'indexation à partir du texte de l'issue.