Rearrange profile buttons so that (un)follow and (un)block are on separate line

lib/screens/home.dart

@@ -26,9 +26,7 @@ class HomeScreen extends StatefulWidget {
 class _HomeScreenState extends State<HomeScreen> {
   final _logger = Logger('$HomeScreen');
 
-  TimelineIdentifiers currentTimeline = const TimelineIdentifiers(
-    timeline: TimelineType.home,
-  );
+  TimelineIdentifiers currentTimeline = TimelineIdentifiers.home();
 
   void updateTimeline(TimelineManager manager) {
     _logger.finest('Updating timeline: $currentTimeline');
@@ -139,6 +137,10 @@ class _HomeScreenState extends State<HomeScreen> {
               ))),
     ];
 
+    if (items.where((i) => i.value == currentTimeline).isEmpty) {
+      currentTimeline = TimelineIdentifiers.home();
+    }
+
     return DropdownButton<TimelineIdentifiers?>(
         value: currentTimeline,
         items: items,