neon: fix LoginPage overflow

packages/neon/neon/lib/src/pages/login.dart

@@ -165,13 +165,9 @@ class _LoginPageState extends State<LoginPage> {
                     : Center(
                         child: Scrollbar(
                           interactive: true,
-                          child: ListView(
-                            primary: true,
-                            shrinkWrap: true,
+                          child: SingleChildScrollView(
                             padding: const EdgeInsets.symmetric(vertical: 40, horizontal: 20),
-                            children: [
-                              SizedBox(
-                                height: MediaQuery.of(context).size.height / 2,
+                            primary: true,
                             child: Column(
                               children: [
                                 SvgPicture.asset(
@@ -191,9 +187,6 @@ class _LoginPageState extends State<LoginPage> {
                                   height: 20,
                                 ),
                                 const NextcloudLogo(),
-                                  ],
-                                ),
-                              ),
                                 Form(
                                   key: _formKey,
                                   child: TextFormField(
@@ -213,8 +206,6 @@ class _LoginPageState extends State<LoginPage> {
                                     },
                                   ),
                                 ),
-                              Column(
-                                children: [
                                 NeonLinearProgressIndicator(
                                   visible: serverConnectionStateSnapshot.data == ServerConnectionState.loading,
                                 ),
@@ -232,7 +223,6 @@ class _LoginPageState extends State<LoginPage> {
                                 ],
                               ],
                             ),
-                            ],
                           ),
                         ),
                       ),