fix(@angular/build): preserve names in esbuild for improved debugging… #1807

Job	Run time
list	28s
workflow (build-cli)	1m 36s
workflow (devkit-core-tests-rerun)	1m 28s
workflow (devkit-core-tests)	1m 17s
workflow (build-unit-tests)	2m 14s
workflow (modules-builder-tests)	1m 51s
	8m 54s

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