Fixed Search Index related bug for Local Cluster scenario

Signed-off-by: saimedhi <saimedhi@amazon.com>

Author: saimedhi

server/routes/opensearch_routes_service.ts

@@ -157,6 +157,7 @@ export function registerOpenSearchRoutes(
         body: schema.any(),
         query: schema.object({
           verbose: schema.boolean(),
+          data_source_version: schema.maybe(schema.string()),
         }),
       },
     },