Fix tests

Author: krassowski

packages/jupyter-ai/jupyter_ai/tests/__snapshots__/test_config_manager.ambr

@@ -3,6 +3,10 @@
   dict({
     'api_keys': list([
     ]),
+    'completions_embeddings_provider_id': None,
+    'completions_fields': dict({
+    }),
+    'completions_model_provider_id': None,
     'embeddings_provider_id': None,
     'fields': dict({
     }),

packages/jupyter-ai/jupyter_ai/tests/completions/test_handlers.py

@@ -28,7 +28,8 @@ def __init__(self):
         self.messages = []
         self.tasks = []
         self.settings["jai_config_manager"] = SimpleNamespace(
-            lm_provider=MockProvider, lm_provider_params={"model_id": "model"}
+            completions_lm_provider=MockProvider,
+            completions_lm_provider_params={"model_id": "model"},
         )
         self.settings["jai_event_loop"] = SimpleNamespace(
             create_task=lambda x: self.tasks.append(x)