fix(@angular/build): properly resolve transitive external dependencie… #898

Job	Run time
list	23s
workflow (build-unit-tests)	2m 13s
workflow (modules-builder-tests)	1m 46s
workflow (build-cli)	1m 37s
workflow (devkit-core-tests)	1m 8s
workflow (devkit-core-tests-rerun)	1m 14s
	8m 21s

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