fix: create-package script

[cryptodev-2s]

Explanation

This PR addresses a bug in the yarn create-package script introduced in this change, where fstatSync was replaced with await fs.stat(packagePath)).isDirectory().

The issue arises because fs.stat now throws an ENOENT error if the packagePath is empty. To resolve this, the script has been updated to handle empty paths gracefully, ensuring the process works as expected when creating new packages.

References

Changelog

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've highlighted breaking changes using the "BREAKING" category above as appropriate
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes