[ci] make wait-ssh the default behavior
I have no idea why I added this option or why we would want it to not be set :/
Fixes #74777
Pull Request resolved: https://github.com/pytorch/pytorch/pull/74816
Approved by: https://github.com/seemethere, https://github.com/janeyx99, https://github.com/malfet, https://github.com/cpuhrsch
