fullscreen: always locate entry

lib/widgets/fullscreen/fullscreen_body.dart

@@ -514,6 +514,10 @@ class _FullscreenVerticalPageViewState extends State<FullscreenVerticalPageView>
     _oldEntry?.imageChangeNotifier?.removeListener(_onImageChanged);
     entry?.imageChangeNotifier?.addListener(_onImageChanged);
     _oldEntry = entry;
+    // make sure to locate the entry,
+    // so that we can display the address instead of coordinates
+    // even when background locating has not reached this entry yet
+    entry?.locate();
   }
 
   // when the entry image itself changed (e.g. after rotation)

lib/widgets/fullscreen/info/info_page.dart

@@ -34,33 +34,6 @@ class InfoPageState extends State<InfoPage> {
 
   CollectionLens get collection => widget.collection;
 
-  @override
-  void initState() {
-    super.initState();
-    _registerWidget(widget);
-  }
-
-  @override
-  void didUpdateWidget(InfoPage oldWidget) {
-    super.didUpdateWidget(oldWidget);
-    _unregisterWidget(oldWidget);
-    _registerWidget(widget);
-  }
-
-  @override
-  void dispose() {
-    _unregisterWidget(widget);
-    super.dispose();
-  }
-
-  void _registerWidget(InfoPage widget) {
-    widget.entryNotifier.addListener(_onEntryChanged);
-  }
-
-  void _unregisterWidget(InfoPage widget) {
-    widget.entryNotifier.removeListener(_onEntryChanged);
-  }
-
   @override
   Widget build(BuildContext context) {
     const horizontalPadding = EdgeInsets.symmetric(horizontal: 8);
@@ -147,10 +120,6 @@ class InfoPageState extends State<InfoPage> {
     );
   }
 
-  void _onEntryChanged() {
-    widget.entryNotifier.value?.locate();
-  }
-
   bool _handleTopScroll(Notification notification) {
     if (notification is ScrollNotification) {
       if (notification is ScrollStartNotification) {