Add browser WASM feature support #1400

Job	Run time
check-wasm-browser	43s
check-1.87.0-ubuntu-latest	1m 6s
check-1.87.0-windows-latest	2m 22s
check-stable-windows-latest	2m 42s
check-nightly-windows-latest	2m 57s
check-stable-ubuntu-latest	1m 2s
check-nightly-ubuntu-latest	1m 0s
	11m 52s

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