test(e2e): surface call_type and provider in spend-row failure summaries

Include call_type and custom_llm_provider in the _summarize row detail so a
failed spend assertion prints the two fields the messages-bridge test asserts
on, instead of hiding them and forcing a re-run to diagnose.

tests/e2e/quota_management/spend_tracking/test_spend_tracking_e2e.py

@@ -41,6 +41,8 @@ def _summarize(rows: list[SpendLogRow]) -> list[dict[str, object]]:
         "spend",
         "status",
         "cache_hit",
+        "call_type",
+        "custom_llm_provider",
         "prompt_tokens",
         "completion_tokens",
         "total_tokens",