[improve][offload] Replace usage of shaded class in OffsetsCache (apache#22683)

(cherry picked from commit 03a4995)

Author: lhotari

tiered-storage/jcloud/src/main/java/org/apache/bookkeeper/mledger/offload/jcloud/impl/OffsetsCache.java

@@ -20,7 +20,7 @@
 
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
-import io.grpc.netty.shaded.io.netty.util.concurrent.DefaultThreadFactory;
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
@@ -49,7 +49,7 @@ public OffsetsCache() {
                     .build();
             cacheEvictionExecutor =
                     Executors.newSingleThreadScheduledExecutor(
-                            new DefaultThreadFactory("jcloud-offsets-cache-eviction"));
+                            new ThreadFactoryBuilder().setNameFormat("jcloud-offsets-cache-eviction").build());
             int period = Math.max(CACHE_TTL_SECONDS / 2, 1);
             cacheEvictionExecutor.scheduleAtFixedRate(() -> {
                 entryOffsetsCache.cleanUp();