fix(cli): stop the publishing process before sending an empty transaction

[saeta-eth]

Bug: Users can run the publish command twice and we're sending the second transaction basically without data.

Bug example:

Etherscan link from the transaction above:
https://sepolia-optimism.etherscan.io/tx/0xa2ae41e455e9be42b48fce84d6ba24e67072e539bc51b2801268fc9ffac1f66b

[changeset-bot]

⚠️ No Changeset found

Latest commit: f978655

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[nx-cloud]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit f978655. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this CI Pipeline Execution

---

✅ Successfully ran 1 target

• lerna run build --ignore cannon-website --ignore @usecannon/indexer --ignore repo --ignore @usecannon/api

---

Sent with 💌 from NxCloud.