test: skip pseudo-tty/no_dropped_stdio test
Checklist
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make -j4 test
(UNIX), orvcbuild test nosign
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
test
We had marked pseudo-tty/no_dropped_stdio as flaky but in some failures it hangs and does not seem to timeout, and or is reported as an error.
Also add prefix to status file as it was missing.
Also fix name of status file in testcfg.py. It was pointing to message.status instead of pseudo-tty.status.