Apply code review feedback: pattern matching and indentation

- Use pattern matching for instanceof in setMessagingConverter() to avoid explicit casting
- Fix constructor parameter indentation to use tabs only (not mixed spaces)
- Address checkstyle violations per reviewer feedback

These changes improve code readability without affecting functionality.

Signed-off-by: Jujuwryy <[email protected]>

Author: Jujuwryy

spring-kafka/src/main/java/org/springframework/kafka/listener/adapter/BatchMessagingMessageListenerAdapter.java

@@ -82,7 +82,7 @@ public BatchMessagingMessageListenerAdapter(@Nullable Object bean, @Nullable Met
 	 * @param errorHandler the error handler.
 	 */
 	public BatchMessagingMessageListenerAdapter(@Nullable Object bean, @Nullable Method method,
-												@Nullable KafkaListenerErrorHandler errorHandler) {
+			@Nullable KafkaListenerErrorHandler errorHandler) {
 
 		super(bean, method, errorHandler);
 	}
@@ -125,9 +125,8 @@ public void setBatchToRecordAdapter(BatchToRecordAdapter<K, V> batchToRecordAdap
 	 */
 	@Override
 	public void setMessagingConverter(SmartMessageConverter messageConverter) {
-		if (this.batchMessageConverter instanceof BatchMessagingMessageConverter) {
-			((BatchMessagingMessageConverter) this.batchMessageConverter)
-					.setMessagingConverter(messageConverter);
+		if (this.batchMessageConverter instanceof BatchMessagingMessageConverter messagingConverter) {
+			messagingConverter.setMessagingConverter(messageConverter);
 		}
 	}