[meson] set check_anywhere_queue_while_stealing automatic
We introduced the check_anywhere_queue_while_steal configuration as an optimization to get the IO completions reaped by the completer faster into the normal WSQ. But now the emper has configurations where we don't use a completer thus making this optimization useless or rather harmful. By default automatically decide the value of check_anywhere_queue_while_stealing based on the value of io_completer_behavior.
auto-check-aq-while-stealing in 15 minutes and 33 seconds (queued for 13 seconds)32 jobs for