Fix replies to encrypted events

src/timeline/TimelineModel.cpp

@@ -870,6 +870,10 @@ void
 TimelineModel::replyAction(QString id)
 {
         auto event = events.value(id);
+        if (auto e = boost::get<mtx::events::EncryptedEvent<mtx::events::msg::Encrypted>>(&event)) {
+                event = decryptEvent(*e).event;
+        }
+
         RelatedInfo related = boost::apply_visitor(
           [](const auto &ev) -> RelatedInfo {
                   RelatedInfo related_   = {};