fix(@schematics/angular): prevent adding test dependencies when minim… #9869

Job	Run time
lint	10s
build	11s
build-e2e-windows	10s
Browser Compatibility Tests	1s
publish-snapshots	1s
e2e	1s
test	1s
e2e-package-managers	1s
e2e-snapshots	1s
e2e-windows	1s
	38s

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