chore(e2e): update waitForSelector to waitForLoadState for improved loading checks

Author: enzonotario

e2e/local/home.spec.ts

@@ -5,9 +5,7 @@ test('home', async ({ page }) => {
 
   await expect(page).toHaveTitle(/VitePress OpenAPI/)
 
-  await page.waitForSelector('.shiki', {
-    state: 'visible',
-  })
+  await page.waitForLoadState('networkidle')
 
   await expect(page).toHaveScreenshot({
     fullPage: true,