Support activity retry delay #1062

Job	Run time
build-lint-test (3.8, ubuntu-latest)	5m 33s
build-lint-test (3.8, ubuntu-arm)	8m 33s
build-lint-test (3.8, macos-intel)	10m 20s
build-lint-test (3.8, windows-latest)	11m 34s
build-lint-test (3.12, ubuntu-latest)	6m 1s
build-lint-test (3.12, ubuntu-arm)	8m 22s
build-lint-test (3.12, macos-intel)	11m 4s
build-lint-test (3.12, macos-arm)	4m 38s
build-lint-test (3.12, windows-latest)	13m 32s
features-tests / test	5m 29s
	1h 25m 6s

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