If set to 0, this pallet does absolutely nothing. Cannot be set to more than
[Config::MaxErasToCheckPerBlock].
Based on the amount of weight available at [Pallet::on_idle], up to this many eras are
checked. The checking is represented by updating [UnstakeRequest::checked], which is
stored in [Head].
Number of eras to check per block.
If set to 0, this pallet does absolutely nothing. Cannot be set to more than [
Config::MaxErasToCheckPerBlock].Based on the amount of weight available at [
Pallet::on_idle], up to this many eras are checked. The checking is represented by updating [UnstakeRequest::checked], which is stored in [Head].