make full curation manifests use a string type for product group ids

apps/cli/executables/pexable/ingest_envoy/ingest_envoy/ingestion_manifest.py

@@ -463,7 +463,8 @@ class IngestionManifestBuilder:
         :return:
         """
         return ReingestGroup(
-            locator=self.product_group if self.product_group else self.locator,
+            # make type consistent for later validation
+            locator=str(self.product_group) if self.product_group else self.locator,
             product_type=self.sp_type,
             targets=self.target_list,
             # product_group=self.product_group,