layout export with `-f layout` doesn't include the reentrancy lock

[cyberthirst]

Version Information

• vyper Version (output of vyper --version): feccaca

What's your issue about?

• see feat[lang]: nonreentrancy by default #4563 (comment) and feat[lang]: nonreentrancy by default #4563 (comment)
• lifting this up from feat[lang]: nonreentrancy by default #4563 for easier tracking and post-audit fix reviews

[cyberthirst]

fixed in: #4621