CSS SVGLinearGradient support #8033

Job	Run time
example-typescript-check-and-lint (apps/macos-example)	1m 44s
example-typescript-check-and-lint (apps/common-app)	3m 29s
example-typescript-check-and-lint (apps/tvos-example)	1m 54s
example-typescript-check-and-lint (apps/fabric-example)	1m 40s
example-typescript-check-and-lint (apps/web-example)	1m 46s
	10m 33s

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