[BUG] flaky unit test(s)

[warber]

Observed behavior

One unit test (TestEventHandler_ProviderReadiness) appears to be flaky, intermittently failing under certain conditions.

--- FAIL: TestEventHandler_ProviderReadiness (0.60s)
    --- FAIL: TestEventHandler_ProviderReadiness/for_unassociated_handler_from_default (0.20s)
        event_executor_test.go:742: timedout waiting for ready state callback, but got none

Expected Behavior

All tests pass

Steps to reproduce

Run the test e.g. 200 times:

go test-run ^TestEventHandler_ProviderReadiness$  -count 200
--- FAIL: TestEventHandler_ProviderReadiness (0.60s)
    --- FAIL: TestEventHandler_ProviderReadiness/for_unassociated_handler_from_default (0.20s)
        event_executor_test.go:742: timedout waiting for ready state callback, but got none
--- FAIL: TestEventHandler_ProviderReadiness (0.60s)
    --- FAIL: TestEventHandler_ProviderReadiness/for_unassociated_handler_from_default (0.20s)
        event_executor_test.go:742: timedout waiting for ready state callback, but got none
--- FAIL: TestEventHandler_ProviderReadiness (0.60s)
    --- FAIL: TestEventHandler_ProviderReadiness/for_unassociated_handler_from_default (0.20s)
        event_executor_test.go:742: timedout waiting for ready state callback, but got none