lib/net: Convert to using internal/errors

[pmatzavin]

Covert lib/net.js over to using lib/internal/errors.js

Ref: #11273

I have not addressed the cases that use errnoException(),
for reasons described in GH-12926

• Replace thrown errors in lib/net.js
  with errors from lib/internal/errors
• Update tests according to the above modification

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

Affected core subsystem(s)

lib/net, doc