Format PayloadInterceptorRSocket

Issue gh-9345

rsocket/src/main/java/org/springframework/security/rsocket/core/PayloadInterceptorRSocket.java

@@ -91,10 +91,10 @@ class PayloadInterceptorRSocket extends RSocketProxy {
 	public Flux<Payload> requestChannel(Publisher<Payload> payloads) {
 		return Flux.from(payloads).switchOnFirst((signal, innerFlux) -> {
 			Payload firstPayload = signal.get();
-			return intercept(PayloadExchangeType.REQUEST_CHANNEL, firstPayload).flatMapMany((context) -> innerFlux
+			return intercept(PayloadExchangeType.REQUEST_CHANNEL, firstPayload).flatMapMany(
-					.index().concatMap((tuple) -> justOrIntercept(tuple.getT1(), tuple.getT2()))
+					(context) -> innerFlux.index().concatMap((tuple) -> justOrIntercept(tuple.getT1(), tuple.getT2()))
-					.transform((securedPayloads) -> this.source.requestChannel(securedPayloads))
+							.transform((securedPayloads) -> this.source.requestChannel(securedPayloads))
-					.subscriberContext(context));
+							.subscriberContext(context));
 		});
 	}