refactor: rename UserFailure.none to UserFailure.empty

Author: narcodico

lib/app/cubit/app_state.dart

@@ -18,7 +18,7 @@ final class AppState extends Equatable {
   const AppState._({
     required this.status,
     this.user = User.none,
-    this.failure = UserFailure.none,
+    this.failure = UserFailure.empty,
   });
 
   const AppState.unauthenticated() : this._(status: AppStatus.unauthenticated);

lib/login/cubit/login_state.dart

@@ -18,7 +18,7 @@ final class LoginState extends Equatable {
   const LoginState._({
     this.status = LoginStatus.initial,
     this.signInMethod = SignInMethod.none,
-    this.failure = UserFailure.none,
+    this.failure = UserFailure.empty,
   });
 
   const LoginState.initial() : this._();

packages/user_repository/lib/src/failures.dart

@@ -13,11 +13,11 @@ class UserFailure extends Failure {
   factory UserFailure.fromSignInWithAppleNotSupported() =>
       const AppleSignInNotSupportedFailure();
 
-  static const none = UserNoFailure();
+  static const empty = EmptyUserFailure();
 }
 
-class UserNoFailure extends UserFailure {
-  const UserNoFailure() : super._();
+class EmptyUserFailure extends UserFailure {
+  const EmptyUserFailure() : super._();
 }
 
 class AuthUserChangesFailure extends UserFailure {