update sign in and register MIH logo nav

Frontend/lib/mih_packages/authentication/register.dart

@@ -243,7 +243,7 @@ class _RegisterState extends State<Register> {
       onTap: () {
         Navigator.of(context).pushNamed(
           '/about',
-          //arguments: widget.signedInUser,
+          arguments: 0,
         );
       },
     );

Frontend/lib/mih_packages/authentication/signin.dart

@@ -291,7 +291,7 @@ class _SignInState extends State<SignIn> {
       onTap: () {
         Navigator.of(context).pushNamed(
           '/about',
-          //arguments: widget.signedInUser,
+          arguments: 0,
         );
       },
     );