update test, update how we check for fallthrough type

Author: ceorourke

src/sentry/workflow_engine/migrations/0104_action_data_fallthrough_type.py

@@ -11,7 +11,7 @@
 def migrate_fallthrough_type(apps: StateApps, schema_editor: BaseDatabaseSchemaEditor) -> None:
     Action = apps.get_model("workflow_engine", "Action")
     for action in RangeQuerySetWrapper(Action.objects.all()):
-        if action.data.get("fallthroughType"):
+        if "fallthroughType" in action.data:
             new_data = action.data.copy()
             del new_data["fallthroughType"]
             new_data["fallthrough_type"] = action.data["fallthroughType"]

tests/sentry/workflow_engine/migrations/test_0104_action_data_fallthrough_type.py

@@ -5,7 +5,7 @@
 
 
 class TestActionDataFallthroughType(TestMigrations):
-    migrate_from = "0103_action_data_fallthrough_type"
+    migrate_from = "0103_add_unique_constraint"
     migrate_to = "0104_action_data_fallthrough_type"
     app = "workflow_engine"