Support Zstandard in Browser/WASM

[rzikm]

Follow-up from #119575.

The static linking of zstd to browser runtime increases the runtime size by about 0.5 MB which is a noticeable increase. The native relink process can strip out most of it if Zstandard APIs are not used in the code, but the code is not stripped otherwise.

After discussion with @pavelsavara, we aggreed that the feature should have an opt-in switch.

The changes needed to make it build and pass tests are the inverse of 196fbc9.

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[pavelsavara]

cc @danroth27