ci(proxy-mgmt-behavior): await LiteLLM_VerificationTokenView creation in fixture

Fourth CI run still failed because the proxy's lifespan kicks off
``prisma_client.check_view_exists()`` as a fire-and-forget background
task — that task is what creates ``LiteLLM_VerificationTokenView``, the
SQL view ``user_api_key_auth`` queries to resolve a token to its
user_id / user_role / team.

On a fresh Postgres (CI), the first test races the background task. The
view doesn't exist when the first auth call runs, the resolver falls
through to a degraded path that returns ``user_id=None``, and every
matrix test that depends on the seeded actor's identity then fails
confusingly with "Got user_id=X, Your ID=None" 403s. Locally the view
persists across pytest runs so the race is invisible.

Fix: await ``prisma_client.check_view_exists()`` explicitly inside the
session ``proxy_app`` fixture, after the lifespan enters but before the
fixture yields. Deterministic regardless of whether the underlying DB is
fresh (CI) or warm (local).

tests/proxy_behavior/management/conftest.py

@@ -54,6 +54,19 @@ async def proxy_app():
     config_path = _write_minimal_proxy_config()
     await initialize(config=config_path)
     async with proxy_startup_event(app):
+        # The lifespan kicks off ``prisma_client.check_view_exists()`` as a
+        # fire-and-forget background task. That task creates the
+        # ``LiteLLM_VerificationTokenView`` SQL view used by ``user_api_key_auth``
+        # to resolve a token to its user / role / team. On a fresh Postgres
+        # (CI), the first test races the task — the view doesn't exist yet,
+        # ``user_api_key_dict.user_id`` resolves to ``None``, and every authz
+        # check that depends on it fails confusingly. Locally the view already
+        # exists from prior runs, masking the race. Await it explicitly here
+        # so the suite is deterministic regardless of DB state.
+        from litellm.proxy import proxy_server as _proxy_server
+
+        if _proxy_server.prisma_client is not None:
+            await _proxy_server.prisma_client.check_view_exists()
         yield app