add schedule task type as immutableExtraInfo #6917

Job	Run time
test-utils-js	13s
test-utils-py	12s
setup	1s
base-build-mac	13m 41s
bb-on-different-os (windows-latest)	23m 1s
debug	0s
base-build-windows	10m 29s
full-build-base	2h 42m 1s
full-build-LTS	2h 21m 9s
bb-on-different-os (macos-latest)	54m 50s
installer-for-windows	0s
installer-for-debian	0s
installer-for-osx	0s
	6h 45m 37s

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