Disallow opening archived chats if in multiselect.

app/src/main/java/org/thoughtcrime/securesms/conversationlist/ConversationListFragment.java

@@ -529,9 +529,11 @@ public class ConversationListFragment extends MainFragment implements ActionMode
 
   @Override
   public void onShowArchiveClick() {
+    if (viewModel.currentSelectedConversations().isEmpty()) {
       NavHostFragment.findNavController(this)
                      .navigate(ConversationListFragmentDirections.actionConversationListFragmentToConversationListArchiveFragment());
     }
+  }
 
   @Override
   public void onContactClicked(@NonNull Recipient contact) {