DefaultSelect passed options={undefined} to MUI Autocomplete while the
insurance lists were still loading (or failed), throwing 'Cannot read
properties of undefined (reading length)'. Default options to [].
The old categorys/insurance_type + supplementary_insurance routes were
removed server-side (ERR_MOVED), so the lists never loaded. Point
getInsuranceType/getSupplementaryInsurance at the current
/api/v1/insurances?type=basic|supplementary (authed; the booking detail
step and dashboard are both logged-in), returning a flat data array.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
