Fix testList argument for CLI runner with SpiderMonkey

Author: danleh

cli.js

@@ -32,8 +32,10 @@ const isD8 = typeof Realm !== "undefined";
 if (isD8)
     globalThis.readFile = read;
 const isSpiderMonkey = typeof newGlobal !== "undefined";
-if (isSpiderMonkey)
+if (isSpiderMonkey) {
     globalThis.readFile = readRelativeToScript;
+    globalThis.arguments = scriptArgs;
+}
 
 if (typeof arguments !== "undefined" && arguments.length > 0)
     testList = arguments.slice();