fence Coroutine.suspend for only js for now, because otherwise CI fails

std/StdTypes.hx

@@ -176,6 +176,7 @@ extern interface ArrayAccess<T> {}
 **/
 @:coreType
 abstract Coroutine<T> {
+	#if js // TODO: implement this all properly for all the targets
 	/**
 		Suspend running coroutine and expose the continuation callback
 		for resuming coroutine execution.
@@ -183,8 +184,6 @@ abstract Coroutine<T> {
 	@:coroutine
 	public static extern function suspend<T>(f:(cont:T->Void)->Void):T;
 
-	#if js
-	// TODO: handle this somehow better
 	static function __init__():Void {
 		js.Syntax.code("{0} = {1}", Coroutine.suspend, cast function(f, cont) return _ -> f(cont));
 	}