chore: tidy up mock data naming to better align with OAuth

Author: lalver1

tests/pytest/oauth/test_hooks.py

@@ -45,7 +45,7 @@ def test_cancel_login_user_initiated(rf, mocked_oauth_analytics_module):
 
 
 def test_cancel_login_anomaly(rf, mocked_oauth_analytics_module):
-    app_request = rf.get("/oauth/cancel", data={"another_error": "a_different_error"})
+    app_request = rf.get("/oauth/cancel", data={"error": "error_code"})
     result = OAuthHooks.cancel_login(app_request)
 
     assert result.status_code == 302