bfix: fix test

Signed-off-by: Aman <aman2@me.iitr.ac.in>

Author: aman-singh7

test/presentation/login/login_test.dart

@@ -58,6 +58,7 @@ void blocTests() {
           ..add(const PasswordInput(''))
           ..add(const UsernameInput('A')),
         expect: () => const <LoginState>[
+          LoginState(),
           LoginState(username: 'A'),
         ],
       );