refactor(@angular/ssr): disable streaming when rendering SSG page #1935

Job	Run time
list	20s
workflow (modules-builder-tests)	1m 48s
workflow (build-cli)	1m 44s
workflow (devkit-core-tests)	1m 20s
workflow (devkit-core-tests-rerun)	1m 37s
workflow (build-unit-tests)	2m 31s
	9m 20s

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