Only add message count to a11y if it's also visible.

Signed-off-by: Peter Vágner <pvdeejay@gmail.com>

app/src/main/java/eu/faircode/email/AdapterMessage.java

@@ -3697,6 +3697,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                     result.add(context.getString(R.string.title_accessibility_selected));
 
                 result.add(context.getString(message.unseen > 0 ? R.string.title_accessibility_unseen : R.string.title_accessibility_seen));
+                if (tvCount.getVisibility() == View.VISIBLE)
                     result.add(context.getResources().getQuantityString(
                             R.plurals.title_accessibility_messages, message.visible, message.visible));