[release/5.0-rc2] Add test for wasm loader regression, fix loading from bundle#42465

CoffeeFlux merged 3 commits intodotnet:release/5.0-rc2dotnet/runtime:release/5.0-rc2from

CoffeeFlux:wasm-alc-bundle-net5-backportCoffeeFlux/runtime:wasm-alc-bundle-net5-backportCopy head branch name to clipboard