refactor: remove 0 check in recovered address in BatcherPaymentService

[MarcosNicolau]

Changes
This PR removes the check for zero addresses in the recovered signature within the BatcherPaymentService contract. The library handling the signature recovery already performs this check when splitting the fields (r, v, s) first and then calling the ecrecover precompile, where it does the check (see here).

Testing
I've tested that everything works by setting up a local environment and sending some sp1 and plonk proofs. Here is the process:

1. Start aggregator: make aggregator_start.
2. Start operator: make operator_register_and_start.
3. Start batcher: make batcher_start_local.
4. Send some proofs and make sure everything works as expected.

Contracts have been updated with make anvil_deploy_aligned_contracts.

Closes#1061

[github-actions]

Changes to gas cost

Generated at commit: d8d846c25009e143caebf4976dc84642e84b428e, compared to commit: 4b2fabe8efd54cc36a600f08767aaaeec90cd991

🧾 Summary (10% most significant diffs)

Contract	Method	Avg (+/-)	%
AlignedLayerServiceManager	createNewTask	+318 ❌	+0.43%

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Full diff report 👇

Contract	Deployment Cost (+/-)	Method	Min (+/-)	%	Avg (+/-)	%	Median (+/-)	%	Max (+/-)	%	# Calls (+/-)
AlignedLayerServiceManager	4,629,415 (0)	createNewTask receive	53,907 (+84) 21,169 (0)	+0.16% 0.00%	73,971 (+318) 44,970 (+373)	+0.43% +0.84%	73,975 (+6) 45,064 (0)	+0.01% 0.00%	74,746 (0) 45,064 (0)	0.00% 0.00%	256 (0) 256 (0)

[MauroToscano]

Re-deploy aligned contracts and test it, and push them