net: emit error on invalid address family

This commit adds proper error handling to net.connect() when
a custom lookup() function returns an invalid address family.

PR-URL: https://github.com/nodejs/node/pull/19415
Fixes: https://github.com/nodejs/node/issues/19407


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Khaidi Chu <i@2333.moe>
Reviewed-By: James M Snell <jasnell@gmail.com>