sendmail: Add missing cleanup migration (#6158)

src/pretix/plugins/sendmail/migrations/0011_remove_cross_event_scheduled_mails_squashed_0012_remove_cross_event_scheduled_mails.py

@@ -0,0 +1,25 @@
+# Generated by Django 5.2.13 on 2026-05-06 15:45
+
+from django.db import migrations
+from django.db.models import F
+
+
+def remove_cross_event_scheduled_mails(apps, schema_editor):
+    Rule = apps.get_model("sendmail", "Rule")
+    ScheduledMail = apps.get_model("sendmail", "ScheduledMail")
+    ScheduledMail.objects.filter(subevent__isnull=False).exclude(subevent__event=F('rule__event')).delete()
+    Rule.objects.filter(subevent__isnull=False).exclude(subevent__event=F('event')).delete()
+
+class Migration(migrations.Migration):
+
+    replaces = [('sendmail', '0011_remove_cross_event_scheduled_mails'), ('sendmail', '0012_remove_cross_event_scheduled_mails')]
+
+    dependencies = [
+        ('sendmail', '0010_auto_20250801_1342'),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            code=remove_cross_event_scheduled_mails,
+        ),
+    ]

src/pretix/plugins/sendmail/migrations/0012_remove_cross_event_scheduled_mails.py

@@ -0,0 +1,17 @@
+from django.db import migrations
+from django.db.models import F
+
+
+def remove_cross_event_scheduled_mails(apps, schema_editor):
+    ScheduledMail = apps.get_model("sendmail", "ScheduledMail")
+    ScheduledMail.objects.filter(subevent__isnull=False).exclude(subevent__event=F('rule__event')).delete()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("sendmail", "0011_remove_cross_event_scheduled_mails"),
+    ]
+
+    operations = [
+        migrations.RunPython(remove_cross_event_scheduled_mails),
+    ]