message: Fix theme selector bubbling out its click events and causing context menu to float away
diff: @@ -130,7 +130,10 @@ export default class UserMenu extends React.Component<IProps, IState> {
  this.setState({contextMenuPosition: null});
  };
  - private onSwitchThemeClick = () => {
  + private onSwitchThemeClick = (ev: React.MouseEvent) => {
  + ev.preventDefault();
  + ev.stopPropagation();
  +
  // Disable system theme matching if the user hits this button
  SettingsStore.setValue("use_system_theme", null, SettingLevel.DEVICE, false);
  