feat(contracts): remove proof verification on finalizeBatchWithProof

[zimpha]

Purpose or design rationale of this PR

We won't provide the proof generation service for sepolia testnet. This PR will allow finalizeBatchWithProof without providing real proof.

PR title

Your PR title must follow conventional commits (as we are doing squash merge for each PR), so it must start with one of the following types:

• feat: A new feature

Deployment tag versioning

Has tag in common/version.go been updated or have you added bump-version label to this PR?

• No, this PR doesn't involve a new deployment, git tag, docker image tag

Breaking change label

Does this PR have the breaking-change label?

• No, this PR is not a breaking change

[github-actions]

LCOV of commit 67d5a86 during Contracts #120

Summary coverage rate:
  lines......: 51.0% (1014 of 1989 lines)
  functions..: 65.0% (227 of 349 functions)
  branches...: no data found

Files changed coverage rate: n/a