Reconciler will not renew Prometheus User Workload Token when it expires

We should update the token to have a shorter expiry date (ex. 1 week) and make it the responsibility of the token reconciler to create a new token when it detects the token has expired. (token.Status.ExpirationTimestamp can provide us the time when the token will expire and we can maybe use RequeueAfter to schedule a new reconciliation when expiration date has been reached). cc. @sthaha 