fix(specs): add searchResponsePartial fallback to searchResult oneOf (generated)

algolia/api-clients-automation#6350

Co-authored-by: algolia-bot <accounts+algolia-api-client-bot@algolia.com>
Co-authored-by: Thomas Raffray <Fluf22@users.noreply.github.com>
Co-authored-by: Eric Zaharia <94015633+eric-zaharia@users.noreply.github.com>

Author: 3 people