TINY-13630: Remove race condition from port binding

[jscasca]

Related Ticket: TINY-13630

Description of Changes:

• Remove race conditions from port binding
• Move scratch dir for compiled code

Pre-checks:

• Changelog entry added
• package.json versions have not been changed (done by Lerna on release)
• Tests have been added (if applicable)

Before merging:

• Ensure internal dependencies are on appropriate versions
  • For stable releases, all dependencies must be stable
  • For release candidates, all dependencies must be release candidates or stable

[ltrouton]

Andy will know this code better but logically I think the code looks good 👍

[TheSpyder]

You've done a very good thing here but it seems to be by accident. Which means it's incomplete.

Lean into the way port zero operates, fix up the manual testing entry point, and this will be a great change.

[TheSpyder]

Thank you