mainWindow: rewrite setting item selection and add fallback

src/mainWindow.js

@@ -41,9 +41,9 @@ setInterval(() => {
 
   host.insertAdjacentElement('afterend', oaVersion);
 
-  let advanced = document.querySelector('[class*="socialLinks"]').parentElement.querySelector('[class*="header"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"]');
+  let advanced = document.querySelector('[class*="socialLinks"]').parentElement.querySelector('[class*="premiumTab"] ~ [class*="header"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] + [class*="item"] ~ [class*="separator"]')?.previousSibling;
+  if (!advanced) advanced = [...document.querySelectorAll('[class*="item"]')].find(x => x.textContent === 'Advanced')
   if (!advanced || document.getElementById('openasar-item')) return;
-  if (advanced.nextSibling.className.includes('item')) advanced = advanced.nextSibling;
 
   const oaSetting = advanced.cloneNode(true);
   oaSetting.textContent = 'OpenAsar';