chatgui: restore input focus after sending message

tools/chatgui/src/inputbar.cpp

@@ -138,4 +138,5 @@ void InputBar::onSendClicked() {
     emit sendMessage(text);
     m_input->clear();
     if (m_emojiPanel) m_emojiPanel->hide();
+    m_input->setFocus();
 }