GH-2588: support batch recoverable DefaultAfterRollbackProcessor

modify toString in `ContainerProperties`

Author: Zhiyang.Wang1

spring-kafka/src/main/java/org/springframework/kafka/listener/ContainerProperties.java

@@ -1081,6 +1081,9 @@ public String toString() {
 				+ (this.transactionManager != null
 						? "\n transactionManager=" + this.transactionManager
 						: "")
+				+ (this.kafkaAwareTransactionManager != null
+						? "\n kafkaAwareTransactionManager=" + this.kafkaAwareTransactionManager
+						: "")
 				+ "\n monitorInterval=" + this.monitorInterval
 				+ (this.scheduler != null ? "\n scheduler=" + this.scheduler : "")
 				+ "\n noPollThreshold=" + this.noPollThreshold