zeromq test non-deterministic failure: reconnect_stop_on_refused after upgrade to 4.3.5

[apteryks]

The test fails non-deterministically like:

FAIL: tests/test_reconnect_options
==================================

Still waiting for monitor event after 250 ms
Still waiting for monitor event after 500 ms
Still waiting for monitor event after 750 ms
WARNING: Forced closure of 2 sockets, this is an implementation error unless the test case failed
Still waiting for monitor event after 250 ms
Still waiting for monitor event after 500 ms
Still waiting for monitor event after 750 ms
tests/test_reconnect_options.cpp:265:reconnect_default:PASS
tests/test_reconnect_options.cpp:266:reconnect_success:PASS
tests/test_reconnect_options.cpp:98:reconnect_stop_on_refused:FAIL: Expected 0x00000080 Was 0x00000001
tests/test_reconnect_options.cpp:269:reconnect_stop_on_handshake_failed:PASS

-----------------------
4 Tests 1 Failures 0 Ignored 
FAIL
FAIL tests/test_reconnect_options (exit status: 1)

I can reproduce in less than 5 attempts typically, on a multiple core (32) machine.

Initially reported here: https://codeberg.org/guix/guix/issues/415

[apteryks]

That test is only run when configuring with --enable-drafts.