Per-era snapshot of whether nominators are slashable.
This is copied from [AreNominatorsSlashable] at the start of each era. When processing
offences, we use the value from this storage for the offence era to ensure that the
slashing rules at the time of the offence are applied, not the current rules.
If an entry does not exist for an era, nominators are assumed to be slashable (default).
Per-era snapshot of whether nominators are slashable.
This is copied from [
AreNominatorsSlashable] at the start of each era. When processing offences, we use the value from this storage for the offence era to ensure that the slashing rules at the time of the offence are applied, not the current rules.If an entry does not exist for an era, nominators are assumed to be slashable (default).