fix(@schematics/angular): add missing imports for lifecycle hooks in … #9329

Job	Run time
lint	1m 57s
build-e2e-windows	3m 44s
build	3m 43s
Browser Compatibility Tests	1s
test	1s
e2e	1s
e2e-package-managers	1s
publish-snapshots	1s
e2e-snapshots	1s
e2e-windows	1s
	9m 31s

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