Applies an electronic invoicing lifecycle transition to a supplier invoice received via the PA.

Invoices arrive with a null e-invoicing status, which means implicitly approved — no action is required to accept them.

Allowed transitions:

• Dispute (status: "disputed"): allowed when the current e-invoicing status is null, approved, or waiting_for_validation, the invoice is not archived, and it has no linked payments. Requires a reason.
• Refuse (status: "refused"): allowed when the invoice is not archived and has no linked payments. Requires a reason. This is a terminal action — the invoice will be archived and cannot be disputed or refused again.
• Undispute (status: "approved"): allowed only when the current e-invoicing status is disputed. Removes the dispute and restores the invoice to approved. No reason required.

Returns 422 if the transition is not allowed given the current status (e.g. undisputing a non-disputed invoice, or disputing/refusing a collected invoice).

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This endpoint requires the following scope: supplier_invoices:all