There's actually 2 related commits here, lmk if you want them as separate MRs.
- The first prevents creating webhooks if the domain of the payment processor isn't the current domain. This check is present in Stripe. This was fairly serious for me because it was causing CiviRules to be triggered multiple times per contribution.
- The second prevents automatically fixing webhooks on status check, instead implementing a workflow identical to Stripe's.
Note that the new page's path is slightly different because there's apparently a bug that if you add an action to the Status page, and the path starts with civicrm/a, it assumes it's an Angular page and screws up the URL.