message: Prevent the multi-init error in server environments (getsentry/sentry-replay#258)
diff: @@ -199,7 +199,7 @@ export class Replay implements Integration {
  }
  );
  - if (_initialized) {
  + if (isBrowser && _initialized) {
  const error = new Error(
  'Multiple Sentry Session Replay instances are not supported'
  );
  