[4.1.x] Fixed #33876, Refs #32229 -- Made management forms render with div.html template.

Thanks to Claude Paroz for the report.

Backport of 89e695a69b from main

django/forms/formsets.py

@@ -32,6 +32,8 @@ class ManagementForm(Form):
     as well.
     """
 
+    template_name = "django/forms/div.html"  # RemovedInDjango50Warning.
+
     TOTAL_FORMS = IntegerField(widget=HiddenInput)
     INITIAL_FORMS = IntegerField(widget=HiddenInput)
     # MIN_NUM_FORM_COUNT and MAX_NUM_FORM_COUNT are output with the rest of the

tests/forms_tests/tests/test_formsets.py

@@ -1910,3 +1910,14 @@ class DeprecationTests(SimpleTestCase):
             ChoiceFormSet = formset_factory(Choice)
             formset = ChoiceFormSet()
             str(formset)
+
+    def test_no_management_form_warning(self):
+        """
+        Management forms are already rendered with the new div template.
+        """
+        with isolate_lru_cache(get_default_renderer), self.settings(
+            FORM_RENDERER="django.forms.renderers.DjangoTemplates"
+        ):
+            ChoiceFormSet = formset_factory(Choice, formset=BaseFormSet)
+            formset = ChoiceFormSet()
+            str(formset.management_form)