Revert "net: partially revert "simplify Socket.prototype._final""

This reverts commit ac1f56c76a5d1a8ebcb2421d5c629e51df1ac48c.

Refs: https://github.com/nodejs/node/pull/24288
Refs: https://github.com/nodejs/node/pull/24075

PR-URL: https://github.com/nodejs/node/pull/24290


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Ouyang Yadong <oyydoibh@gmail.com>