Information request status changed

Fires when an information request's approval status changes. This is a status-change event.

Ready-to-review signal: a newStatus of READY_FOR_AUDIT means the customer has submitted the information request and it is ready for the auditor to review.

When it fires: once per information request, each time its status changes between the values below. Not every status transition emits an event.

Status values:

• NEEDS_EVIDENCE — the request still needs work from the customer; it is not yet ready for the auditor.
• READY_FOR_AUDIT — the customer has submitted the request and it is ready for the auditor to review.
• AUDITOR_APPROVED — the auditor reviewed the request and approved it.
• AUDITOR_FLAGGED — the auditor flagged the request for the customer to address.

A typical lifecycle is NEEDS_EVIDENCE → READY_FOR_AUDIT → AUDITOR_APPROVED (or → AUDITOR_FLAGGED). A request can also move from READY_FOR_AUDIT back to NEEDS_EVIDENCE when the customer takes it back to continue working on it.