fix: Fix unattached get_signed_cookie tests for django-sudo (#35254)

tests/sentry/sudo/test_utils.py

@@ -86,6 +86,7 @@ class HasSudoPrivilegesTestCase(BaseTestCase):
             return "nope"
 
         self.request.session[COOKIE_NAME] = "abc123"
+        self.request.get_signed_cookie = get_signed_cookie
         self.assertFalse(has_sudo_privileges(self.request))
 
     def test_cookie_bad_signature(self):
@@ -95,6 +96,7 @@ class HasSudoPrivilegesTestCase(BaseTestCase):
             raise BadSignature
 
         self.request.session[COOKIE_NAME] = "abc123"
+        self.request.get_signed_cookie = get_signed_cookie
         self.assertFalse(has_sudo_privileges(self.request))
 
     def test_missing_keys(self):