Fix event notification tests #1444

Job	Run time
lint	41s
build	31s
cleanup_buckets	25s
test-linux-bundle	8m 22s
test (ubuntu-latest, 3.8)	5m 44s
test-docker	12m 32s
test-windows-bundle (windows-2019)	10m 42s
test (ubuntu-latest, 3.9)	5m 17s
test-windows-bundle (windows-latest)	11m 25s
test (ubuntu-latest, 3.10)	5m 36s
test (ubuntu-latest, 3.11)	4m 49s
test (ubuntu-latest, 3.12)	10m 34s
test (ubuntu-latest, pypy3.9)	12m 37s
test (ubuntu-latest, pypy3.10)	20m 57s
test (macos-latest, 3.10)	2m 42s
test (macos-latest, 3.11)	4m 1s
test (macos-latest, 3.12)	6m 7s
test (macos-latest, pypy3.9)	9m 16s
test (windows-latest, 3.8)	5m 36s
test (windows-latest, 3.9)	5m 40s
test (windows-latest, 3.10)	6m 8s
test (windows-latest, 3.11)	5m 59s
test (windows-latest, 3.12)	11m 32s
test (windows-latest, pypy3.9)	19m 21s
test (macos-13, 3.8)	7m 57s
test (macos-13, 3.9)	10m 10s
doc	55s
	3h 25m 36s

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