Revert "Uses ephemeral session when signing in to Patreon"

This reverts commit 9c2985825e.

Reverted because users might not be able to complete the login flow after verifying their emails.

AltStore/Patreon/PatreonAPI.swift

@@ -133,7 +133,6 @@ extension PatreonAPI
         if #available(iOS 13.0, *)
         {
             self.authenticationSession?.presentationContextProvider = self
-            self.authenticationSession?.prefersEphemeralWebBrowserSession = true
         }
         
         self.authenticationSession?.start()