YDA-5441 Only create flat index in vault deposit packages.

meta.py

@@ -14,6 +14,7 @@
 from deepdiff import DeepDiff
 
 import avu_json
+import folder
 import provenance
 import publication
 import schema as schema_
@@ -483,7 +484,7 @@ def ingest_metadata_vault(ctx, path):
             data_package = row[0]
 
     # Update flat index metadata for OpenSearch.
-    if config.enable_open_search:
+    if config.enable_open_search and folder.collection_group_name(ctx, coll).startswith("deposit-"):
         update_index_metadata(ctx, coll + "/index", metadata, creation_time, data_package)
 
     # Remove any remaining legacy XML-style AVUs.