Fix flaky spring integration test (#12185)

instrumentation/spring/spring-integration-4.1/testing/src/main/java/io/opentelemetry/javaagent/instrumentation/spring/integration/v4_1/AbstractComplexPropagationTest.java

@@ -130,7 +130,7 @@ void initialize() {
                     Payload payload = externalQueue().take();
                     receiveChannel().send(payload.toMessage());
                   } catch (InterruptedException e) {
-                    throw new IllegalStateException(e);
+                    Thread.currentThread().interrupt();
                   }
                 }
               });