[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.
32 jobs for auto-check-aq-while-stealing in 15 minutes and 33 seconds (queued for 13 seconds)
Status Name Job ID Coverage
  Smoke Test
passed clang-tidy #482244

00:05:50

passed fast-static-analysis #482242

00:02:52

passed iwyu #482243

00:01:23

passed smoke-test-suite #482241

00:01:23

 
  Test
passed test-clang #482248

00:05:12

passed test-clang-debug #482250

00:02:48

passed test-clang-release #482249

00:04:43

passed test-clang-sanitizer-undefined #482254

00:02:40

passed test-do-not-log-timestamp #482259

00:07:39

passed test-futex-wakeup-semaphore #482261

00:02:37

passed test-gcc #482245

00:02:51

passed test-gcc-debug #482247

00:04:10

passed test-gcc-release #482246

00:03:57

passed test-io-stealing #482269

00:05:16

passed test-io-stealing-pipe-no-completer #482271

00:02:22

passed test-io-stealing-pipe-no-completer-lockless #482272

00:02:46

passed test-laws #482255

00:05:22

passed test-laws-release #482256

00:04:27

passed test-locked-wakeup-semaphore #482262

00:01:49

passed test-locked-ws-queues #482260

00:03:04

passed test-lockless-cq #482268

00:03:02

passed test-lockless-io-stealing #482270

00:02:48

passed test-mmapped-log #482264

00:02:46

passed test-pipe-sleep-strategy #482266

00:08:48

passed test-pipe-sleep-strategy-no-completer #482267

00:03:04

passed test-set-affinity-on-block #482263

00:04:48

passed test-single-uring #482265

00:07:39

passed test-with-stats #482252

00:05:07

passed test-with-userspace-rcu #482253

00:02:48

passed test-worker-no-sleep #482251

00:05:23

passed test-worker-wakeup-strategy-all #482257

00:04:46

passed test-worker-wakeup-strategy-throttle #482258

00:09:41