… to the event names they currently use.

Currently, various internal streams have different events that indicate that the
underlying resource has successfully been established. This commit adds ready event
for fs and net sockets to standardize on emitting ready for all of these streams.

Fixes: nodejs#19304

removed file descriptor for ready event in fs streams and updated test case
to check only for ready event.

Fixes: nodejs#19304

removed file descriptor for ready event in fs streams and updated test case
to check only for ready event.

Fixes: nodejs#19304

updated test case updated test case to check for ready event
on writestream

Fixes: nodejs#19304

…am.js

Fixes: nodejs#19304