Update channel notifications default properly when changing account settings (#5559)

webapp/components/channel_header.jsx

@@ -100,6 +100,7 @@ export default class ChannelHeader extends React.Component {
         ChannelStore.addStatsChangeListener(this.onListenerChange);
         SearchStore.addSearchChangeListener(this.onListenerChange);
         PreferenceStore.addChangeListener(this.onListenerChange);
+        UserStore.addChangeListener(this.onListenerChange);
         UserStore.addInChannelChangeListener(this.onListenerChange);
         UserStore.addStatusesChangeListener(this.onListenerChange);
         WebrtcStore.addChangedListener(this.onListenerChange);
@@ -113,6 +114,7 @@ export default class ChannelHeader extends React.Component {
         ChannelStore.removeStatsChangeListener(this.onListenerChange);
         SearchStore.removeSearchChangeListener(this.onListenerChange);
         PreferenceStore.removeChangeListener(this.onListenerChange);
+        UserStore.removeChangeListener(this.onListenerChange);
         UserStore.removeInChannelChangeListener(this.onListenerChange);
         UserStore.removeStatusesChangeListener(this.onListenerChange);
         WebrtcStore.removeChangedListener(this.onListenerChange);