fix(@angular/build): pass process environment variables to prerender … #3234

Job	Run time
list	38s
workflow (build-cli)	1m 47s
workflow (build-unit-tests)	2m 39s
workflow (devkit-core-tests)	1m 27s
workflow (modules-builder-tests)	2m 3s
workflow (devkit-core-tests-rerun)	1m 28s
	10m 2s

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