Remove redundant react-dom/server.browser shim #8890

Job	Run time
build	2m 12s
deploy-target	10s
build-wasm (web)	25s
build-wasm (nodejs)	26s
stable - x86_64-apple-darwin - node@16	1m 20s
stable - aarch64-apple-darwin - node@16	1m 22s
stable - x86_64-pc-windows-msvc - node@16	1m 13s
stable - x86_64-unknown-linux-gnu - node@16	26s
stable - aarch64-unknown-linux-gnu - node@16	33s
Deploy examples	0s
Deploy preview tarball	2m 19s
Potentially publish release	0s
Upload Turbopack Bytesize metrics to Datadog	0s
Release Stats	0s
	10m 26s

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