member identity has both non null `next_scheduled` and `expire_on`
As written here (https://forum.duniter.org/t/proposition-pour-supprimer-la-pallet-membership/11918/4),
# at block
0x7da4e9b0cfbf610f0a5efb945f92e4a85190b263014db85ec6271a9945f31026
Both are "3,756,656" but when membership.expire_on
is non null, identity.next_scheduled
should be null.
This might be a bug since identity.identityChangeSchedule(3756656)
contains 344.