fix: webview crash when removing in close event (#38996)

spec/fixtures/crash-cases/webview-remove-on-wc-close/index.js

@@ -0,0 +1,29 @@
+const { app, BrowserWindow } = require('electron');
+
+app.whenReady().then(() => {
+  const win = new BrowserWindow({
+    webPreferences: {
+      webviewTag: true
+    }
+  });
+
+  win.loadFile('index.html');
+
+  win.webContents.on('did-attach-webview', (event, contents) => {
+    contents.on('render-process-gone', () => {
+      process.exit(1);
+    });
+
+    contents.on('destroyed', () => {
+      process.exit(0);
+    });
+
+    contents.on('did-finish-load', () => {
+      win.webContents.executeJavaScript('document.querySelector(\'.close-btn\').click()');
+    });
+
+    contents.on('will-prevent-unload', event => {
+      event.preventDefault();
+    });
+  });
+});