Make GeneratedField parameter db_persist required (#2568)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Adam Johnson <me@adamj.eu>

Author: 3 people

django-stubs/db/models/fields/generated.pyi

@@ -22,7 +22,7 @@ class GeneratedField(models.Field):
         *,
         expression: Expression,
         output_field: models.Field,
-        db_persist: bool | None = None,
+        db_persist: bool,
         verbose_name: _StrOrPromise | None = ...,
         name: str | None = ...,
         primary_key: bool = ...,

scripts/stubtest/allowlist.txt

@@ -510,3 +510,10 @@ django.db.models.Model.asave
 django.db.models.Model.save
 django.db.models.base.Model.asave
 django.db.models.base.Model.save
+
+# Ignore: GeneratedField.__init__ is inconsistent, runtime argument "db_persist" has a default value but stub argument does not
+# The default value None never worked and has been dropped for Django 6.0:
+# https://code.djangoproject.com/ticket/36262
+django.contrib.gis.db.models.GeneratedField.__init__
+django.db.models.GeneratedField.__init__
+django.db.models.fields.generated.GeneratedField.__init__