refactor(@angular/build): use `t.buildUndefinedNode` instead of `Scop… #3445

Job	Run time
list	25s
workflow (modules-builder-tests)	1m 59s
workflow (devkit-core-tests)	1m 24s
workflow (devkit-core-tests-rerun)	1m 21s
workflow (build-unit-tests)	2m 16s
workflow (build-cli)	1m 43s
	9m 8s

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