[WASM] Ensure WasmTestRunner is exitting on a non-background thread#72802

simonrozsival wants to merge 4 commits intodotnet:maindotnet/runtime:mainfrom

simonrozsival:experiment-ensure-exiting-wasmtestrunner-on-main-threadsimonrozsival/runtime:experiment-ensure-exiting-wasmtestrunner-on-main-threadCopy head branch name to clipboard