net: emit 'close' after 'end'

Currently the writable side of the socket is closed as soon as `UV_EOF`
is read regardless of the state of the socket. This allows the handle
to be closed before `'end'` is emitted and thus `'close'` can be
emitted before `'end'` if the socket is paused.

This commit prevents the handle from being closed until `'end'` is
emitted ensuring the correct order of events.

PR-URL: https://github.com/nodejs/node/pull/19241
Fixes: https://github.com/nodejs/node/issues/19166


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>