Airlock notifier doesn't notify of rejected requests

[TonyWildish-BH]

Describe the bug
The Airlock Notifier workflow notifies the workspace team that a request has been approved, but it doesn't notify them that a request has been rejected. So if the Airlock Manager rejects a request, they are left without any indication of that unless they happen to be polling the status page.

This is undesirable, the user should be notified of the rejection, and the reviewer's reason for rejecting the request should be included.

Steps to reproduce

1. As a Workspace team member, create an airlock import or export request
2. As an Airlock Manager, reject the request
3. Wait for an email that never comes

Azure TRE release version (e.g. v0.14.0 or main):

Deployed Azure TRE components - click the (i) in the UI:

[TonyWildish-BH]

P.S. Airlock notifier template version 0.9.0.

[Danny-Cooke-CK]

Hi Tony. Interesting observation. Seems reasonable that we should expect a notification for all status changes.