Potentially misleading error message in _check_started

[mhasself]

See

sorunlib/src/sorunlib/_internal.py

Line 121 in 0a8fa64

error = f"Check timed out. Operation {op} in Agent {instance} stuck in " + \

If the process stays in state "starting" for a few seconds, so it enters the timeout loop, but then proceeds to "failed" or "done" (rather than "running"), the error message will still say "Check timed out. Operation ... stuck in starting state."

This happened, just now, and made a routine Sun Safety problem in ACU look like some kind of timeout / failure to progress.