chore: Adjust threading logging

Author: jeromelaban

src/Uno.Wasm.Threads.Shared/Program.cs

@@ -83,7 +83,7 @@ void logMessage(string message)
 				int index = Interlocked.Increment(ref counter);
 				lock (_gate)
 				{
-					_messages.Add($"[tid:{Thread.CurrentThread.ManagedThreadId}]: {index} / {message}");
+					_messages.Add($"[tid:{Thread.CurrentThread.ManagedThreadId}][ctx:{SynchronizationContext.Current?.ToString()}]: {index} / {message}");
 				}
 			}
 
@@ -103,7 +103,7 @@ void DoWork(string name)
 #pragma warning disable CA1416 // Validate platform compatibility
 			new Thread(_ =>
 			{
-				Console.WriteLine($"Starting thread [tid:{Thread.CurrentThread.ManagedThreadId}]");
+				Console.WriteLine($"Starting thread [tid:{Thread.CurrentThread.ManagedThreadId}] [ctx:{SynchronizationContext.Current?.ToString()}]");
 
 				_jsContext.Post(_ => MainThreadCallback(), null);
 				Console.WriteLine("InvokeOnMainThread2");

src/Uno.Wasm.Threads.Shared/WasmScripts/test.js

@@ -3,7 +3,7 @@
 });
 
 var Interop = {
-    appendResult: async function (str) {
+    appendResult: function (str) {
         var txt = document.createTextNode(str);
         var parent = document.getElementById('results');
         parent.appendChild(txt, parent.lastChild);