neon, neon_notifications: make AppImplementation.buildIcon a builder

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

@@ -356,7 +356,7 @@ class _HomePageState extends State<HomePage> {
                                                     ],
                                                   ],
                                                 ),
-                                                leading: appImplementation.buildIcon(context),
+                                                leading: appImplementation.buildIcon(),
                                                 minLeadingWidth: 0,
                                                 onTap: () async {
                                                   await _appsBloc.setActiveApp(appImplementation.id);

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

@@ -78,7 +78,7 @@ class _SettingsPageState extends State<SettingsPage> {
                       for (final appImplementation in appImplementations) ...[
                         if (appImplementation.options.options.isNotEmpty) ...[
                           CustomSettingsTile(
-                            leading: appImplementation.buildIcon(context),
+                            leading: appImplementation.buildIcon(),
                             title: Text(appImplementation.name(context)),
                             onTap: () {
                               NextcloudAppSettingsRoute(appid: appImplementation.id).go(context);

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

@@ -41,18 +41,19 @@ abstract class AppImplementation<T extends Bloc, R extends NextcloudAppSpecificO
 
   Widget get page;
 
-  Widget buildIcon(
+  Widget buildIcon({
-    final BuildContext context, {
     final Size size = const Size.square(32),
     final Color? color,
   }) =>
-      SizedBox.fromSize(
+      Builder(
+        builder: (final context) => SizedBox.fromSize(
           size: size,
           child: SvgPicture.asset(
             'assets/app.svg',
             package: 'neon_$id',
             colorFilter: ColorFilter.mode(color ?? Theme.of(context).colorScheme.primary, BlendMode.srcIn),
           ),
+        ),
       );
 
   void dispose() {

packages/neon/neon/lib/src/widgets/app_implementation_icon.dart

@@ -24,7 +24,6 @@ class NeonAppImplementationIcon extends StatelessWidget {
           Container(
             margin: const EdgeInsets.all(5),
             child: appImplementation.buildIcon(
-              context,
               size: size,
               color: color,
             ),

packages/neon/neon_notifications/lib/pages/main.dart

@@ -74,7 +74,6 @@ class _NotificationsMainPageState extends State<NotificationsMainPage> {
       ),
       leading: app != null
           ? app.buildIcon(
-              context,
               size: const Size.square(40),
             )
           : SizedBox.fromSize(