test: add net regression test

Ensure that the socket is not destroyed when the 'end' event is emitted

Refs: https://github.com/nodejs/node/pull/32780#issuecomment-612602551

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines