fix(@angular/build): prevent IIFE wrapper interleaving for adjacent c… #4037

Job	Run time
list	40s
workflow (build-cli)	1m 45s
workflow (devkit-core-tests)	1m 29s
workflow (modules-builder-tests)	2m 12s
workflow (build-unit-tests)	2m 19s
workflow (devkit-core-tests-rerun)	1m 29s
	9m 54s

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