fix: address issue with zkstack dev generate-genesis cmd

[dutterbutter]

What ❔

• Fixes path issue for zkstack dev generate-genesis cmd

Why ❔

• Issue reported when used alongside --link-to-code during ecosytem create / init for arbitrary core versions (see: 1035)

Is this a breaking change?

• [ ] Yes
• [x] No

Operational changes

Checklist

• [ ] PR title corresponds to the body of PR (we generate changelog entries from PRs).
• [ ] Tests for the changes have been added / updated.
• [ ] Documentation comments have been added / updated.
• [ ] Code has been formatted via zkstack dev fmt and zkstack dev lint.

[thecodingshrimp]

I support this

[thecodingshrimp]

this is approved, could we merge this?