Fixed #29414 -- Restored form inputs on admin inlines when the user doesn't have the change permission.

Regression in 825f0beda8.

tests/admin_inlines/tests.py

@@ -447,6 +447,16 @@ class TestInline(TestDataMixin, TestCase):
         self.assertTrue(response.context['inline_admin_formset'].opts.has_registered_model)
         self.assertNotContains(response, INLINE_CHANGELINK_HTML)
 
+    def test_noneditable_inline_has_field_inputs(self):
+        """Inlines without change permission shows field inputs on add form."""
+        response = self.client.get(reverse('admin:admin_inlines_novelreadonlychapter_add'))
+        self.assertContains(
+            response,
+            '<input type="text" name="chapter_set-0-name" '
+            'class="vTextField" maxlength="40" id="id_chapter_set-0-name">',
+            html=True
+        )
+
 
 @override_settings(ROOT_URLCONF='admin_inlines.urls')
 class TestInlineMedia(TestDataMixin, TestCase):