'Alert requesting permission to open browser iOS-Swift

I have an application that logs in against keycloak. To do this, when starting the application an alert appears warning that my app wants to use "xxxxxplatform.com" for Sign In. It gives me 2 options: Cancel (the app would do nothing) and Continue (opens the platform browser to do the login). My question is: is it necessary that this alert always appears? Or can it be added to the plist (or somewhere else) to always keep the permission granted? Thanks in advance

EDIT: I'm using AppAuth for the login



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