fixed context usage async gaps warnings and deleted some comments

lib/features/auth/screens/login_screen.dart

@@ -49,8 +49,8 @@ class LoginScreenState extends State<LoginScreen>
           if (state is Authenticated) {
             final storage = getIt<SecureStorage>();
             final mpin = await storage.read('mpin');
+            if (!context.mounted) return;
             if (mpin == null) {
-              // ignore: use_build_context_synchronously
               Navigator.of(context).pushReplacement(
                 MaterialPageRoute(
                   builder: (_) => MPinScreen(
@@ -69,7 +69,6 @@ class LoginScreenState extends State<LoginScreen>
                 ),
               );
             } else {
-              // ignore: use_build_context_synchronously
               Navigator.of(context).pushReplacement(
                 MaterialPageRoute(builder: (_) => const NavigationScaffold()),
               );
@@ -88,7 +87,6 @@ class LoginScreenState extends State<LoginScreen>
               child: Column(
                 mainAxisAlignment: MainAxisAlignment.center,
                 children: [
-                  // 🔁 Animated Blinking Logo
                   Image.asset(
                     'assets/images/logo.png',
                     width: 150,
@@ -144,8 +142,7 @@ class LoginScreenState extends State<LoginScreen>
                     controller: _passwordController,
                     obscureText: _obscurePassword,
                     textInputAction: TextInputAction.done,
-                    onFieldSubmitted: (_) =>
+                    onFieldSubmitted: (_) => _submitForm(),
-                        _submitForm(), // ⌨️ Enter key submits
                     decoration: InputDecoration(
                       labelText: AppLocalizations.of(context).password,
                       border: const OutlineInputBorder(),