Finish PM composer cleanup and skip history requests after shutdown

tools/chatgui/src/inputbar.cpp

@@ -495,6 +495,8 @@ void InputBar::forgetDmHistory(const QString& target, quint64 generation) {
         m_pttActive = false;
         if (m_recorder && m_recorder->isRecording()) m_recorder->stopRecording();
         m_recordTarget.clear(); m_recordReply.clear(); m_recordDmGeneration = 0;
+        m_pttBtn->setStyleSheet("QPushButton { border: none; border-radius: 4px; background: transparent; }"
+                               "QPushButton:hover { background: palette(light); }");
     }
     if (m_channelIdForRecord == target && m_dmGeneration == generation) {
         ++m_attachmentContext; clearPendingAttachment(); clearReply(); m_input->clear();