Fixed #33134 -- Fixed recursion depth error when rendering Form with BoundFields.

Regression in 456466d932.

django/forms/boundfield.py

@@ -177,7 +177,6 @@ class BoundField:
                 else:
                     attrs['class'] = self.form.required_css_class
         context = {
-            'form': self.form,
             'field': self,
             'label': contents,
             'attrs': attrs,

tests/forms_tests/templates/forms_tests/cyclic_context_boundfield_render.html

@@ -0,0 +1,2 @@
+{% load tags %}
+{% count_render %}

tests/forms_tests/templatetags/tags.py

@@ -0,0 +1,21 @@
+from django.template import Library, Node
+
+register = Library()
+
+
+class CountRenderNode(Node):
+    count = 0
+
+    def render(self, context):
+        self.count += 1
+        for v in context.flatten().values():
+            try:
+                v.render()
+            except AttributeError:
+                pass
+        return str(self.count)
+
+
+@register.tag
+def count_render(parser, token):
+    return CountRenderNode()

tests/forms_tests/tests/test_forms.py

@@ -3954,3 +3954,14 @@ class OverrideTests(SimpleTestCase):
             '<div class="error">This field is required.</div></div>'
             '<p>Comment: <input type="text" name="comment" required></p>',
         )
+
+    def test_cyclic_context_boundfield_render(self):
+        class FirstNameForm(Form):
+            first_name = CharField()
+            template_name_label = 'forms_tests/cyclic_context_boundfield_render.html'
+
+        f = FirstNameForm()
+        try:
+            self.assertInHTML('<th>1</th>', f.render())
+        except RecursionError:
+            self.fail('Cyclic reference in BoundField.render().')