Measure proxy test durations with a monotonic clock

tools/chatgui/src/messagefeedback.cpp

@@ -136,7 +136,8 @@ void MessageList::createPoll() {
             unique.insert(text); values.append(text); bytes += 2 + text.toUtf8().size();
         }
         if (!valid || values.size() < 2 || values.size() > CHAT_POLL_OPTIONS_MAX || bytes > CHAT_POLL_WIRE_MAX) {
-            QMessageBox::warning(&dialog, feedbackText("Create poll"), feedbackText("Enter a question and distinct options within the size limit.")); return;
+            QMessageBox::warning(&dialog, feedbackText("Create poll"),
+                feedbackText("Enter a question and distinct options within the size limit.")); return;
         }
         sendFeedback({{"cmd", "poll_create"}, {"question", title}, {"options", values},
             {"mode", mode->currentIndex() ? "multiple" : "single"}, {"allow_custom_answer", custom->isChecked()}});