refactor(@angular/cli): add architect target discovery to list_projec… #10382

Job	Run time
build-e2e-windows	34s
build	23s
lint	21s
Browser Compatibility Tests	1s
test	1s
publish-snapshots	1s
e2e-package-managers	1s
e2e	1s
e2e-snapshots	1s
e2e-windows	1s
	1m 25s

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