Pod for cypress test receives onlyoffice traffic

We noticed a lot of stackspin pipelines failing on nextcloud helm test, specifically when cypress tries to open a (new) onlyoffice document. The error would be "504 Gateway Time-out" from nginx, or nextcloud itself saying it could not contact onlyoffice.

After lengthy debugging, it turns out that this is probably caused by the cypress pod receiving traffic for the nc-onlyoffice-documentserver! The selector for that service is app.kubernetes.io/instance=nc,app.kubernetes.io/name=onlyoffice-documentserver, which matches the cypress pod...