build: add babel core to root packages #8994

Job	Run time
lint	22s
build	29s
build-e2e-windows	28s
publish-snapshots	0s
Browser Compatibility Tests	0s
test	0s
e2e	0s
e2e-snapshots	0s
e2e-package-managers	0s
e2e-windows	-1s
	1m 18s

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