fix: analyzer warnings

Author: rithik-dev

lib/src/auth_handler.dart

@@ -11,7 +11,7 @@ part 'auth_controller.dart';
 
 class FirebasePhoneAuthHandler extends StatefulWidget {
   const FirebasePhoneAuthHandler({
-    Key? key,
+    super.key,
     required this.phoneNumber,
     required this.builder,
     this.onLoginSuccess,
@@ -26,7 +26,7 @@ class FirebasePhoneAuthHandler extends StatefulWidget {
     this.otpExpirationDuration =
         FirebasePhoneAuthController.kAutoRetrievalTimeOutDuration,
     this.recaptchaVerifierForWebProvider,
-  }) : super(key: key);
+  });
 
   /// {@template phoneNumber}
   ///
@@ -175,8 +175,7 @@ class FirebasePhoneAuthHandler extends StatefulWidget {
       FirebasePhoneAuthController._of(context, listen: false).signOut();
 
   @override
-  // ignore: library_private_types_in_public_api
-  _FirebasePhoneAuthHandlerState createState() =>
+  State<FirebasePhoneAuthHandler> createState() =>
       _FirebasePhoneAuthHandlerState();
 }
 

lib/src/auth_provider.dart

@@ -6,9 +6,9 @@ import 'package:provider/provider.dart';
 /// to enable your application to support phone authentication.
 class FirebasePhoneAuthProvider extends StatelessWidget {
   const FirebasePhoneAuthProvider({
-    Key? key,
+    super.key,
     required this.child,
-  }) : super(key: key);
+  });
 
   /// The child of the widget.
   final Widget child;