test: fix incorrect assumptions on uid and gid

Add a invalidArgTypeErrorCount variable to adjust the number of expected
errors if the uid and gid options cannot be properly validated.

Fixes: https://github.com/nodejs/node/issues/19371
PR-URL: https://github.com/nodejs/node/pull/19554


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Shingo Inoue <leko.noor@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>