refactor(@angular/build): also add `server.preTransformRequests` #525

Job	Run time
list	43s
workflow (build-cli)	2m 16s
workflow (modules-builder-tests)	2m 25s
workflow (devkit-core-tests)	1m 55s
workflow (devkit-core-tests-rerun)	2m 3s
workflow (build-unit-tests)	2m 51s
	12m 13s

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