reduce exec time of fast-unstake benchmarks (#13120)

* reduce exec time of fast-unstake benchmarks

* fix test

* fmt

* fix patch the tests

* fix patch the tests

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* add batch size as well

* update some benches to be better

* fix one last test

* fix

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* reduce time even more

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* fix tests

* nit

* remove

* improve the weight calc further

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* fix benchmarks

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* update

* fix

* fix

* fmt

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* lots of changes again...

* smaller input

* update

* fmt

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* cleanup

* small simplification

* fmt

* reduce exec time a bit

* fix

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* test

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* increase again

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

* review comments

* fmt

* fix

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_fast_unstake

Co-authored-by: command-bot <>