Fixed #35988 -- Made BaseForm.full_clean() pass renderer to ErrorDict.

tests/forms_tests/tests/test_forms.py

@@ -5313,6 +5313,22 @@ class OverrideTests(SimpleTestCase):
             "required></p>",
         )
 
+    def test_custom_renderer_error_dict(self):
+        class CustomRenderer(DjangoTemplates):
+            def render(self, template_name, context, request=None):
+                if template_name == "django/forms/errors/dict/default.html":
+                    return "<strong>So many errors!</strong>"
+                return super().render(template_name, context, request)
+
+        form = Form({}, renderer=CustomRenderer())
+        form.full_clean()
+        form.add_error(None, "Test error")
+
+        self.assertHTMLEqual(
+            form.errors.render(),
+            "<strong>So many errors!</strong>",
+        )
+
     def test_cyclic_context_boundfield_render(self):
         class FirstNameForm(Form):
             first_name = CharField()