Updates to get OAuth somewhat working but not ideal

lib/models/auth/oauth_credentials.dart

@@ -151,7 +151,9 @@ class OAuthCredentials implements ICredentials {
       final result = await FlutterWebAuth2.authenticate(
           url: url.toString(),
           callbackUrlScheme: redirectScheme,
-      );
+          options: const FlutterWebAuth2Options(
+            preferEphemeral: true,
+          ));
       final code = Uri.parse(result).queryParameters['code'];
       if (code == null) {
         _logger.severe(