fix(@angular-devkit/build-angular): ensure vitest code coverage handl… #2224

Job	Run time
list	23s
workflow (modules-builder-tests)	1m 45s
workflow (devkit-core-tests)	1m 18s
workflow (build-cli)	1m 38s
workflow (devkit-core-tests-rerun)	1m 26s
workflow (build-unit-tests)	2m 21s
	8m 51s

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