BUG: Fix preview URL

[the38th]

In some cases preview URL is generated with - at the end of the subdomain. In this case, preview deployment failed. e.g.: pr2-deployment-4521-example-voting-app-monorepo-zakary-tillman-.app.uffizzi.com The preview was created from opened PR and part of the slug (with random substring) in the subdomain was cropped after -.

Needs to investigate and improve preview URL generating.

[the38th]

for QA: preview for tests - https://deployment-4773-ufzi-on-ufzi-cp-internal-x0vlpg.app.uffizzi.com/

[NealArw]

TESTED - OK

[NealArw]

TESTED on prod - OK