Patch `pallet-multisig` in stable2412 - incompatible weighs vs benchmark

[bkontur]

Benchmarks for pallet-multisig generates incompatible weights for stable2412 (master and stable2503 are ok).
So probably something was not backported to the stable2412 or we didn't generate benchmarks for pallet-multisig in polkadot-sdk.

For example for approve_as_multi_create benchmark contains z component:
https://github.com/paritytech/polkadot-sdk/blob/stable2412/substrate/frame/multisig/src/benchmarking.rs#L200-L203

#[benchmark]
	fn approve_as_multi_create(
		s: Linear<2, { T::MaxSignatories::get() }>,
		z: Linear<0, 10_000>,
	) -> Result<(), BenchmarkError> {

But the weighs trait does not: https://github.com/paritytech/polkadot-sdk/blob/stable2412/substrate/frame/multisig/src/weights.rs#L57

fn approve_as_multi_create(s: u32, ) -> Weight;

The result is that runtime does not compile:

Compiling staging-kusama-runtime v1.0.0 (/home/bkontur/cargo-remote-builds-fellows/3744595396643541023/relay/kusama)
  error[E0050]: method `approve_as_multi_create` has 2 parameters but the declaration in trait `approve_as_multi_create` has 1
     --> /home/bkontur/cargo-remote-builds-fellows/3744595396643541023/relay/kusama/src/weights/pallet_multisig.rs:121:32
      |
  121 |     fn approve_as_multi_create(s: u32, _z: u32, ) -> Weight {
      |                                   ^^^^^^^^^^^^ expected 1 parameter, found 2
      |
      = note: `approve_as_multi_create` from trait: `fn(u32) -> sp_runtime::Weight`

  error[E0050]: method `approve_as_multi_approve` has 2 parameters but the declaration in trait `approve_as_multi_approve` has 1
     --> /home/bkontur/cargo-remote-builds-fellows/3744595396643541023/relay/kusama/src/weights/pallet_multisig.rs:137:33
      |
  137 |     fn approve_as_multi_approve(s: u32, z: u32, ) -> Weight {
      |                                    ^^^^^^^^^^^ expected 1 parameter, found 2
      |
      = note: `approve_as_multi_approve` from trait: `fn(u32) -> sp_runtime::Weight`

  error[E0050]: method `cancel_as_multi` has 2 parameters but the declaration in trait `cancel_as_multi` has 1
     --> /home/bkontur/cargo-remote-builds-fellows/3744595396643541023/relay/kusama/src/weights/pallet_multisig.rs:155:24
      |
  155 |     fn cancel_as_multi(s: u32, _z: u32, ) -> Weight {
      |                           ^^^^^^^^^^^^ expected 1 parameter, found 2
      |
      = note: `cancel_as_multi` from trait: `fn(u32) -> sp_runtime::Weight`

  For more information about this error, try `rustc --explain E0050`.
  error: could not compile `staging-kusama-runtime` (lib) due to 3 previous errors

[bkontur]

I see it was caused by this: #6789

[bkontur]

Benchmarks for pallet-multisig generates incompatible weights for stable2412 (master and stable2503 are ok).

actually, stable2409 has the same problem, but uses old syntax for benchmarks: https://github.com/paritytech/polkadot-sdk/blob/stable2409/substrate/frame/multisig/src/benchmarking.rs#L160-L164, not sure why it worked for old syntax and fails for a new syntax.
Maybe the migration to the benchmars v2 was not correct here: https://github.com/paritytech/polkadot-sdk/pull/5995/files#diff-5a2955b61af496005e95ef8d82448fcd76fd957fe4f382b1a757bdfaf0335dd4L142-R203 ?
#5995

[acatangiu]

fixed by #8335