fix: reject the start-after query in ListObjects (V1)

Fixes #2004

tests/test_rest_list_objects.sh

@@ -248,9 +248,6 @@ source ./tests/drivers/objects_and_versions.sh
 
 # tags: curl,ListObjects,start-after,invalid-query
 @test "ListObjectsV1 - start-after - error" {
-  if [ "$DIRECT" != "true" ]; then
-    skip "https://github.com/versity/versitygw/issues/2004"
-  fi
   run setup_bucket_and_files_v3 "$BUCKET_ONE_NAME" 2
   assert_success
   read -r bucket_name file_one file_two <<< "$output"