refactor(@angular/build): provide a default for the ng-packagr projec… #856

Job	Run time
list	28s
workflow (build-cli)	1m 24s
workflow (modules-builder-tests)	1m 46s
workflow (build-unit-tests)	2m 15s
workflow (devkit-core-tests-rerun)	1m 28s
workflow (devkit-core-tests)	1m 9s
	8m 30s

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