WebAssembly helper should return the module

[RSWilli]

Clear and concise description of the problem

emscripten has an instantiateWasm property, where you get the imports and must call the callback with the module, which wont work in vite, because the __vite-wasm-helper returns only Webassembly.Exports

instantiateWasm: (imports, cb) => {
    FFprobewasm(imports as any)
        .then((exports) => {
            console.log(exports) // compilation worked, and the exports are logged

            cb(module) // <- but the callback expects a Webassembly.Module, 
                              // but the helper only returns Webassembly.Exports
        })

    return {}
}

Suggested solution

https://github.com/vitejs/vite/blob/main/packages/vite/src/node/plugins/wasm.ts#L40

this should only return result, if needed, the user can call the properties by himself, but in the current way there is no way to access the module

Alternative

an alternative is to compile the wasm myself, because then I get access to the Module

Additional context

No response

Validations

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[bluwy]

This looks the same as #5615. I'll close this in favour of that issue (even though this is older), since there's a PR linked that should fix it too.