DefaultReconnectionHandler "invokes failed if reconnect fails" test fails on macOS

[JunTaoLuo]

As part of #12145, I found that "invokes failed if reconnect fails" fails on macOS consistently. I've disabled it (commented it out) for now but the failure should be investigated.

[JunTaoLuo]

cc @rynowak @SteveSandersonMS @javiercn @pranavkm

[SteveSandersonMS]

Thanks @JunTaoLuo!

[mkArtakMSFT]

@NTaylorMullen here is another one for you to tackle.

[NTaylorMullen]

I can't reproduce the failure on MacOS. Going to relax some of the test parameters and see if it passes on the CI.