neon: make AppImplementation provide a widget getter as a main page

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

@@ -150,7 +150,7 @@ class _HomePageState extends State<HomePage> {
               ],
             ),
           ),
-          body: app.buildPage(context, _appsBloc),
+          body: app.page,
         ),
       ),
     );
@@ -526,9 +526,7 @@ class _HomePageState extends State<HomePage> {
                                   ] else ...[
                                     if (activeAppIDSnapshot.hasData) ...[
                                       Expanded(
-                                        child: appImplementations.data!
+                                        child: appImplementations.data!.find(activeAppIDSnapshot.data!)!.page,
-                                            .find(activeAppIDSnapshot.data!)!
-                                            .buildPage(context, _appsBloc),
                                       ),
                                     ],
                                   ],

packages/neon/neon/lib/src/utils/app_implementation.dart

@@ -30,7 +30,7 @@ abstract class AppImplementation<T extends Bloc, R extends NextcloudAppSpecificO
 
   BehaviorSubject<int>? getUnreadCounter(final AppsBloc appsBloc);
 
-  Widget buildPage(final BuildContext context, final AppsBloc appsBloc);
+  Widget get page;
 
   Widget buildIcon(
     final BuildContext context, {

packages/neon/neon_files/lib/neon_files.dart

@@ -62,7 +62,7 @@ class FilesApp extends AppImplementation<FilesBloc, FilesAppSpecificOptions> {
       );
 
   @override
-  Widget buildPage(final BuildContext context, final AppsBloc appsBloc) => const FilesMainPage();
+  Widget get page => const FilesMainPage();
 
   @override
   BehaviorSubject<int>? getUnreadCounter(final AppsBloc appsBloc) => null;

packages/neon/neon_news/lib/neon_news.dart

@@ -68,7 +68,7 @@ class NewsApp extends AppImplementation<NewsBloc, NewsAppSpecificOptions> {
       );
 
   @override
-  Widget buildPage(final BuildContext context, final AppsBloc appsBloc) => const NewsMainPage();
+  Widget get page => const NewsMainPage();
 
   @override
   BehaviorSubject<int> getUnreadCounter(final AppsBloc appsBloc) => appsBloc.getAppBloc<NewsBloc>(this).unreadCounter;

packages/neon/neon_notes/lib/neon_notes.dart

@@ -58,7 +58,7 @@ class NotesApp extends AppImplementation<NotesBloc, NotesAppSpecificOptions> {
       );
 
   @override
-  Widget buildPage(final BuildContext context, final AppsBloc appsBloc) => const NotesMainPage();
+  Widget get page => const NotesMainPage();
 
   @override
   BehaviorSubject<int>? getUnreadCounter(final AppsBloc appsBloc) => null;

packages/neon/neon_notifications/lib/neon_notifications.dart

@@ -37,7 +37,7 @@ class NotificationsApp extends NotificationsAppInterface {
       );
 
   @override
-  Widget buildPage(final BuildContext context, final AppsBloc appsBloc) => const NotificationsMainPage();
+  Widget get page => const NotificationsMainPage();
 
   @override
   BehaviorSubject<int> getUnreadCounter(final AppsBloc appsBloc) =>