Fix the fuzzer on wasm2c2wasm: emcc must request d8 support now (#3975)
Fix the fuzzer on wasm2c2wasm: emcc must request d8 support now (#3975)

Emscripten stopped emitting shell support code by default (as most users
run node.js, but here we are literally fuzzing d8).

Fixes #3967
WebAssembly/binaryen,WebAssembly/binaryen,WebAssembly/binaryen,WebAssembly/binaryen,WebAssembly/binaryen