CI: Try to launch built mac executable
CI Mac builds should try to run the server, to detect problems like ddeanbrown reports in #44549 comments that built binary does not actually run.
These patches seem to work. Currently that means that they find #46010 and fail the build. Fix for that issue should be pushed in before this testing part.
CI Mac builds should try to run the server, to detect problems like ddeanbrown reports in #44549 comments that built binary does not actually run.