message: update isUserOnDarkTheme to return correct theme when use_system_theme is true
diff: @@ -103,12 +103,16 @@ export default class UserMenu extends React.Component<IProps, IState> {
  };
  private isUserOnDarkTheme(): boolean {
  + if (SettingsStore.getValue("use_system_theme")) {
  + return window.matchMedia("(prefers-color-scheme: dark)").matches;
  + } else {
  const theme = SettingsStore.getValue("theme");
  if (theme.startsWith("custom-")) {
  return getCustomTheme(theme.substring("custom-".length)).is_dark;
  }
  return theme === "dark";
  }
  + }
  private onProfileUpdate = async () => {
  // the store triggered an update, so force a layout update. We don't
  