introduce config env variable for requequeing for killedworker #494

Job	Run time
pre-commit	15s
combine-environments	12s
unit-tests (3.11)	25s
docs-build	24s
type-check	40s
integration-tests (3.11, -integration)	23s
distribution	0s
upload-to-pypi	0s
	2m 19s

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