Merge branch 'jk/fsmonitor-event-listener-race-fix' into maint-2.47

On macOS, fsmonitor can fall into a race condition that results in a client waiting forever to be notified for an event that have already happened. This problem has been corrected. * jk/fsmonitor-event-listener-race-fix: fsmonitor: initialize fs event listener before accepting clients simple-ipc: split async server initialization and running