dApp Staking v3 improvements

[Dinonard]

Pull Request Summary

Various post-testnet launch improvements.

Maintenance Mode & Migration

Migration doesn't force maintenance mode unless it's really needed. This allows dApp staking v3 to be used before the entire v2 storage has been cleaned up.

Migration Benchmarks

Redid benchmarks for the migration to measure how much is cleaned up in a bulk.
This is useful since the major bottleneck when doing cleanup is the PoV size, which is grossly overestimated
when only one value is cleaned up. Because trie nodes are reused for multiple entries, since they belong to the same pallet, we end up with lesser overestimates if we do bulk benchmarks.

Missing OnRuntimeUpgrade Setting

Added setting of current era info when runtime is upgraded - otherwise it would incorrectly start from zero.
Even if that happens, it's not a breaking bug, but it's incorrect to look at.

Force Calls For Testing

Added two additional root-only calls to be used for dApp staking v3 testing.
They will be removed prior to production network launch.

TODOs

• re-run & integrate migration benchmarks

[Dinonard]

/bench shibuya-dev pallet_dapp_staking_migration

[github-actions]

Benchmarks job is scheduled at https://github.com/AstarNetwork/Astar/actions/runs/7289356746.
Please wait for a while.
Branch: feat/dapp-staking-v3-improvements
SHA: a432dff

[github-actions]

Benchmarks have been finished.
You can download artifacts if exists https://github.com/AstarNetwork/Astar/actions/runs/7289356746.

[ashutoshvarma]

LGTM

[github-actions]

Package	Line Rate	Branch Rate	Health
precompiles/assets-erc20/src	81%	0%	✔
pallets/dapps-staking/src/pallet	85%	0%	✔
pallets/ethereum-checked/src	48%	0%	❌
pallets/dapps-staking/src	81%	0%	✔
chain-extensions/types/xvm/src	0%	0%	❌
pallets/dynamic-evm-base-fee/src	81%	0%	✔
pallets/xvm/src	40%	0%	❌
precompiles/dapp-staking-v3/src	90%	0%	✔
precompiles/substrate-ecdsa/src	74%	0%	➖
primitives/src	66%	0%	➖
precompiles/dapps-staking/src	94%	0%	✔
pallets/dapp-staking-v3/src/test	0%	0%	❌
precompiles/unified-accounts/src	100%	0%	✔
pallets/dapp-staking-v3/rpc/runtime-api/src	0%	0%	❌
precompiles/sr25519/src	64%	0%	➖
precompiles/dapp-staking-v3/src/test	0%	0%	❌
pallets/unified-accounts/src	84%	0%	✔
pallets/dapp-staking-migration/src	39%	0%	❌
precompiles/xcm/src	72%	0%	➖
chain-extensions/types/assets/src	0%	0%	❌
chain-extensions/xvm/src	0%	0%	❌
chain-extensions/unified-accounts/src	0%	0%	❌
pallets/collator-selection/src	69%	0%	➖
primitives/src/xcm	66%	0%	➖
chain-extensions/types/unified-accounts/src	0%	0%	❌
pallets/dapp-staking-v3/src	78%	0%	➖
pallets/inflation/src	70%	0%	➖
precompiles/xvm/src	74%	0%	➖
pallets/dapp-staking-v3/src/benchmarking	0%	0%	❌
chain-extensions/pallet-assets/src	0%	0%	❌
pallets/xc-asset-config/src	53%	0%	➖
pallets/block-rewards-hybrid/src	87%	0%	✔
Summary	67% (3142 / 4658)	0% (0 / 0)	➖

Minimum allowed line rate is 50%