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Throwaway
Fix hangs on 5.19+ and TB2

The noop trick initializes the STDOUT, so that the TAP::Harness
issued IO::Select->can_read calls (which are blocking wtf wtf wtf)
keep spinning and scheduling jobs
Not only does this solve a mysterious fail of TB2 on 5.19+, but
it results in an overall much smoother job-queue drainage, since
the Harness blocks less

(ideally this needs to be addressed in T::H, but a quick patchjob
broke everything so tabling it for now)