Sync verification approvals

Submit an already-verified customer for any verification checks added since they were onboarded, using their saved profile. Checks that already ran — approved, in review, or rejected — are left untouched, so calling this never disturbs an existing approval, and calling it when the customer is already up to date is a no-op that returns the current state. While a submission is still under Seismic's review, the call is also a no-op returning the current state — new checks start once the review completes. Expect requests for information (RFIs) by email while the new checks run; completion is announced by the customer.kyc.status_changed / customer.kyb.status_changed webhooks — for a customer already approved, the event fires with the status unchanged and expanded: true — after which newly available capabilities appear on the approvals endpoints.