fix(ACI): Filter migration and emit logs (#104053)

I ran this migration yesterday and it took 12 hours and was canceled.
This updates it to only look for the ones where `type` is "email" and
emits logs to keep track of progress. There are 1,799,316 rows with
email as opposed to ~3m overall.

Author: ceorourke

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

@@ -1,22 +1,36 @@
 # Generated by Django 5.2.8 on 2025-11-24 19:57
 
+import logging
+
 from django.db import migrations
 from django.db.backends.base.schema import BaseDatabaseSchemaEditor
 from django.db.migrations.state import StateApps
 
 from sentry.new_migrations.migrations import CheckedMigration
 from sentry.utils.query import RangeQuerySetWrapper
 
+logger = logging.getLogger(__name__)
+
 
 def migrate_fallthrough_type(apps: StateApps, schema_editor: BaseDatabaseSchemaEditor) -> None:
     Action = apps.get_model("workflow_engine", "Action")
-    for action in RangeQuerySetWrapper(Action.objects.all()):
+    count = 0
+    for action in RangeQuerySetWrapper(Action.objects.filter(type="email")):
         if "fallthroughType" in action.data:
             new_data = action.data.copy()
             del new_data["fallthroughType"]
             new_data["fallthrough_type"] = action.data["fallthroughType"]
             action.data = new_data
             action.save()
+        count += 1
+        if count % 1000 == 0:
+            logger.info(
+                "Progress update",
+                extra={
+                    "count": count,
+                    "current_action_id": action.id,
+                },
+            )
 
 
 class Migration(CheckedMigration):