refactor(@schematics/angular): remove default for zoneless in ng-new … #949

Job	Run time
list	29s
workflow (modules-builder-tests)	25s
workflow (build-cli)	25s
workflow (devkit-core-tests-rerun)	28s
workflow (devkit-core-tests)	26s
workflow (build-unit-tests)	22s
	2m 35s

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