Fix IndexOptionsConflict for kind_updated index (#3303)

Set explicit name "kind_updated" on (kind, updated_at, dataset) index
to match the existing index in the database and prevent mongoengine
from trying to create it with an auto-generated name.

Fixes SSE API pod crash loop caused by IndexOptionsConflict (code 85).

Made-with: Cursor

Author: arekborucki

libs/libcommon/src/libcommon/simple_cache.py

@@ -170,7 +170,7 @@ class CachedResponseDocument(Document):
             ("error_code", "kind", "details.copied_from_artifact"),  # < recommended by Atlas
             ("http_status", "error_code", "kind", "updated_at"),  # < recommended by Atlas
             ("kind", "http_status", "updated_at"),  # optimize updated_at range queries
-            ("kind", "updated_at", "dataset"),  # optimize updated_at range with dataset
+            {"fields": ["kind", "updated_at", "dataset"], "name": "kind_updated"},
         ],
     }
     objects = QuerySetManager["CachedResponseDocument"]()