fix(e2e): use ObjectMeta wrapper for Provider name in OIDC tests

The Provider proto message uses ObjectMeta for metadata (including name)
rather than a top-level name field. Update test constructions to match
the current datamodel.proto schema.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Paolo Dettori <dettori@us.ibm.com>

Author: pdettori

e2e/python/oidc/oidc_auth_test.py

@@ -168,7 +168,7 @@ def test_admin_can_create_provider(self) -> None:
         stub, metadata = _stub_with_token(token)
         req = openshell_pb2.CreateProviderRequest(
             provider=datamodel_pb2.Provider(
-                name="e2e-oidc-admin-test",
+                metadata=datamodel_pb2.ObjectMeta(name="e2e-oidc-admin-test"),
                 type="claude",
                 credentials={"API_KEY": "test-value"},
             )
@@ -192,7 +192,7 @@ def test_user_cannot_create_provider(self) -> None:
         stub, metadata = _stub_with_token(token)
         req = openshell_pb2.CreateProviderRequest(
             provider=datamodel_pb2.Provider(
-                name="e2e-oidc-user-blocked",
+                metadata=datamodel_pb2.ObjectMeta(name="e2e-oidc-user-blocked"),
                 type="claude",
                 credentials={"API_KEY": "test-value"},
             )