[core] Change commit.callbacks order (#6636)

Author: muttcg

paimon-core/src/main/java/org/apache/paimon/AbstractFileStore.java

@@ -370,8 +370,7 @@ public InternalRowPartitionComputer partitionComputer() {
     }
 
     private List<CommitCallback> createCommitCallbacks(String commitUser, FileStoreTable table) {
-        List<CommitCallback> callbacks =
-                new ArrayList<>(CallbackUtils.loadCommitCallbacks(options, table));
+        List<CommitCallback> callbacks = new ArrayList<>();
 
         if (options.partitionedTableInMetastore() && !schema.partitionKeys().isEmpty()) {
             PartitionHandler partitionHandler = catalogEnvironment.partitionHandler();
@@ -401,6 +400,7 @@ private List<CommitCallback> createCommitCallbacks(String commitUser, FileStoreT
             callbacks.add(new IcebergCommitCallback(table, commitUser));
         }
 
+        callbacks.addAll(CallbackUtils.loadCommitCallbacks(options, table));
         return callbacks;
     }