C# Fixes wasi http header bug and adds a test for it#1215

silesmo wants to merge 2 commits intobytecodealliance:mainbytecodealliance/wit-bindgen:mainfrom

Nor2-io:dev/timmy/wasi-http-header-bugNor2-io/wit-bindgen:dev/timmy/wasi-http-header-bugCopy head branch name to clipboard