fix(@angular/build): pass process environment variables to prerender … #3238

Job	Run time
list	26s
workflow (build-unit-tests)	2m 32s
workflow (modules-builder-tests)	1m 52s
workflow (devkit-core-tests)	1m 34s
workflow (devkit-core-tests-rerun)	1m 38s
workflow (build-cli)	1m 54s
	9m 56s

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