fix: release artifact names and tags

[nbaztec]

What 💻

• Properly name artifacts when releasing.
• Fix bug in IS_NIGHTLY detection.

Why ✋

• We had inconsistency with nightly artifacts names with the stable ones.

Evidence 📷

Action runs
https://github.com/matter-labs/foundry-zksync/actions/runs/12950423332/job/36123203197
https://github.com/matter-labs/foundry-zksync/actions/runs/12950402414/job/36123129539

Documentation 📚

Please ensure the following before submitting your PR:

• Check if these changes affect any documented features or workflows.
• Update the book if these changes affect any documented features or workflows.

Notes 📝

We're currently using include-component-in-tag = true in release-please so our stable tags come out as foundry-zksync-v0.0.4 meanwhile nightly tags are nightly-{{sha}}, this is all good but if we don't need the component we should look into removing that part. @dutterbutter

[dutterbutter]

We're currently using include-component-in-tag = true in release-please so our stable tags come out as foundry-zksync-v0.0.4 meanwhile nightly tags are nightly-{{sha}}, this is all good but if we don't need the component we should look into removing that part

@nbaztec we can look at removing, initially wanted to keep as I havent reviewed if folks rely on it in anyway. Upstream has it the same so we can review and look to remove if not needed.