Attempt to recover a lost account by a friend within the given friend group.
The initiator's approval is recorded automatically, so they do not need to call
approve_attempt themselves.
Once an account has been recovered by a friend group, no friend group of equal or lower
priority can open a new attempt: it will fail with [Error::HigherPriorityRecovered].
Only a strictly higher-priority group (lower numerical
[FriendGroup::inheritance_priority]) can take over the inheritor.
Attempt to recover a lost account by a friend within the given friend group.
The initiator's approval is recorded automatically, so they do not need to call
approve_attemptthemselves.Once an account has been recovered by a friend group, no friend group of equal or lower priority can open a new attempt: it will fail with [
Error::HigherPriorityRecovered]. Only a strictly higher-priority group (lower numerical [FriendGroup::inheritance_priority]) can take over the inheritor.