show search bar when closing bottom sheet

Fixes #1172

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/java/com/nextcloud/talk/controllers/ConversationsListController.java

@@ -686,7 +686,7 @@ public class ConversationsListController extends BaseController implements Searc
         }
 
         bottomSheet.setOnShowListener(dialog -> new KeyboardUtils(getActivity(), bottomSheet.getLayout(), true));
-        bottomSheet.setOnDismissListener(dialog -> getActionBar().setDisplayHomeAsUpEnabled(getRouter().getBackstackSize() > 1));
+        bottomSheet.setOnDismissListener(dialog -> showSearchOrToolbar());
         bottomSheet.show();
     }