refactor(backup): use existing comparator

Co-authored-by: Ole Schönburg <ole.schoenburg@gmail.com>
(cherry picked from commit 65e08d9)

backup/src/main/java/io/camunda/zeebe/backup/management/BackupServiceImpl.java

@@ -19,7 +19,6 @@
 import io.camunda.zeebe.scheduler.future.CompletableActorFuture;
 import java.util.Collection;
 import java.util.Collections;
-import java.util.Comparator;
 import java.util.HashSet;
 import java.util.Optional;
 import java.util.Set;
@@ -81,8 +80,7 @@ private void takeBackupIfDoesNotExist(
     final BackupStatusCode existingBackupStatus =
         availableBackups.isEmpty()
             ? BackupStatusCode.DOES_NOT_EXIST
-            : Collections.max(availableBackups, Comparator.comparing(BackupStatus::statusCode))
-                .statusCode();
+            : Collections.max(availableBackups, BackupStatusCode.BY_STATUS).statusCode();
     switch (existingBackupStatus) {
       case COMPLETED -> {
         LOG.debug("Backup {} is already completed, will not take a new one", inProgressBackup.id());