fix(@angular/build): prevent esbuild service child process leakage #3102

Job	Run time
lint	1m 55s
build-e2e-windows	19s
build	19s
publish-snapshots	0s
e2e	0s
Browser Compatibility Tests	0s
e2e-snapshots	-1s
e2e-package-managers	-1s
test	-1s
e2e-windows	-1s
	2m 29s

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