[#6275] fix: incorrect logger class in IcebergMetricsManager (#6287)

### What changes were proposed in this pull request?

Correct the logger class in IcebergMetricsManager

### Why are the changes needed?

Fix: #6275 

### Does this PR introduce _any_ user-facing change?

No

### How was this patch tested?

UT

iceberg/iceberg-rest-server/src/main/java/org/apache/gravitino/iceberg/service/metrics/IcebergMetricsManager.java

@@ -30,14 +30,13 @@
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 import org.apache.gravitino.iceberg.common.IcebergConfig;
-import org.apache.gravitino.iceberg.common.ops.IcebergCatalogWrapper;
 import org.apache.gravitino.iceberg.service.IcebergRestUtils;
 import org.apache.iceberg.metrics.MetricsReport;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 public class IcebergMetricsManager {
-  private static final Logger LOG = LoggerFactory.getLogger(IcebergCatalogWrapper.class);
+  private static final Logger LOG = LoggerFactory.getLogger(IcebergMetricsManager.class);
 
   // Register IcebergMetricsStore's short name to its full qualified class name in the map. So
   // that user doesn't need to specify the full qualified class name when creating an