Clearer edit and review modes for ESC change requests

Pulumi ESC change requests now cleanly separate editing a draft from reviewing one. The editor is always where you change the new version, the approval page is a read-only diff, and a banner on the environment lets you flip between the two. Both modes are deep-linkable, so you can send a coworker a URL to review — or co-edit — the same draft before it’s approved.

Learn more about approvals in Pulumi ESC.