message: Don't explode if the SdkConfig isn't available
  This can happen prior to logging in, for some reason.
diff: @@ -24,7 +24,8 @@ import SdkConfig from "../SdkConfig";
  */
  export default class ConfigSettingsHandler extends SettingsHandler {
  getValue(settingName, roomId) {
  - const settingsConfig = SdkConfig.get()["settingDefaults"];
  + const config = SdkConfig.get() || {};
  + const settingsConfig = config["settingDefaults"];
  if (!settingsConfig || !settingsConfig[settingName]) return null;
  return settingsConfig[settingName];
  }
  