fix: suppress GeneratorExit during client cleanup #4042

Job	Run time
checks / pre-commit	35s
checks / readme-snippets	11s
checks / test (3.10, highest, ubuntu-latest)	50s
checks / test (3.10, lowest-direct, windows-latest)	2m 32s
checks / test (3.11, lowest-direct, windows-latest)	2m 35s
checks / test (3.10, highest, windows-latest)	2m 37s
checks / test (3.10, lowest-direct, ubuntu-latest)	50s
checks / test (3.11, lowest-direct, ubuntu-latest)	47s
checks / test (3.12, lowest-direct, windows-latest)	3m 15s
checks / test (3.12, highest, windows-latest)	3m 22s
checks / test (3.12, highest, ubuntu-latest)	54s
checks / test (3.12, lowest-direct, ubuntu-latest)	51s
checks / test (3.14, highest, windows-latest)	2m 30s
checks / test (3.14, lowest-direct, windows-latest)	2m 35s
checks / test (3.14, highest, ubuntu-latest)	1m 14s
checks / test (3.11, highest, ubuntu-latest)	46s
checks / test (3.11, highest, windows-latest)	3m 3s
checks / test (3.13, lowest-direct, ubuntu-latest)	47s
checks / test (3.13, lowest-direct, windows-latest)	2m 49s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 13s
checks / test (3.13, highest, ubuntu-latest)	47s
checks / test (3.13, highest, windows-latest)	3m 34s
	38m 37s

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