Fix locally failing test in FlushingIntegrationTests

spring-web/src/test/java/org/springframework/http/server/reactive/AbstractHttpHandlerIntegrationTests.java

@@ -88,7 +88,7 @@ public abstract class AbstractHttpHandlerIntegrationTests {
 	 * set the number of buffered to an arbitrary number greater than N.
 	 * </ul>
 	 */
-	public static Flux<Long> interval(Duration period, int count) {
+	public static Flux<Long> testInterval(Duration period, int count) {
 		return Flux.interval(period).take(count).onBackpressureBuffer(count);
 	}