fix: window.open site instance should belong to same browsing instance (#15216)

spec/fixtures/module/preload-sandbox.js

@@ -23,7 +23,16 @@
     }
   } else if (location.href !== 'about:blank') {
     addEventListener('DOMContentLoaded', () => {
+      ipcRenderer.on('touch-the-opener', () => {
+        let errorMessage = null
+        try {
+          const openerDoc = opener.document // eslint-disable-line no-unused-vars
+        } catch (error) {
+          errorMessage = error.message
+        }
+        ipcRenderer.send('answer', errorMessage)
+      })
       ipcRenderer.send('child-loaded', window.opener == null, document.body.innerHTML, location.href)
-    }, false)
+    })
   }
 })()