fix: cors issues

fixed cors by adding coep headless line to the webcontainer

app/lib/webcontainer/index.ts

@@ -22,7 +22,11 @@ if (!import.meta.env.SSR) {
     import.meta.hot?.data.webcontainer ??
     Promise.resolve()
       .then(() => {
-        return WebContainer.boot({ workdirName: WORK_DIR_NAME });
+        return WebContainer.boot({
+          coep: 'credentialless',
+          workdirName: WORK_DIR_NAME,
+          forwardPreviewErrors: true, // Enable error forwarding from iframes
+        });
       })
       .then((webcontainer) => {
         webcontainerContext.loaded = true;