refactor(@angular-devkit/schematics): update type usage to support is… #2508

Job	Run time
lint	2m 28s
build-e2e-windows	19s
build	15s
Browser Compatibility Tests	0s
publish-snapshots	0s
test	0s
e2e	-1s
e2e-snapshots	-1s
e2e-package-managers	-1s
e2e-windows	0s
	2m 59s

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