[clang] [WebAssembly] Make EH depend on multivalue and reference-types (PR #91299)

[Heejin Ahn via cfe-commits]

aheejin wrote:

According to https://webassembly.org/features/, EH is supported from node v17, which is also Emscripten test infra requires: https://github.com/emscripten-core/emscripten/blob/2fefc1911e2e6265174c3fd5da38c8e9ab7abb60/test/common.py#L866-L868

So EH tests should have been already being skipped in Chromium CI, so I don't think the same problem will happen there.

https://github.com/llvm/llvm-project/pull/91299