Style: Separate observation dispatch test after upstream additions

Signed-off-by: mday-io <mdaytn@gmail.com>

Author: mday-io

tests/core/test_snapshot_evaluator.py

@@ -5923,6 +5923,8 @@ def test_promote_resolves_this_model_with_single_mapping_entry(
     assert spy.call_count == 20
     for call in spy.call_args_list:
         assert len(call.args[1]) == 1
+
+
 @pytest.mark.parametrize("workers", [1, 2])
 @pytest.mark.parametrize("operation", ["create", "promote", "demote", "migrate"])
 def test_observation_propagates_through_snapshot_dispatch(