fix: properly generate requestID in webContents.printToPDF() (#20769)

lib/browser/api/web-contents.js

@@ -71,7 +71,6 @@ const defaultPrintingSetting = {
   headerFooterEnabled: false,
   marginsType: 0,
   isFirstRequest: false,
-  requestID: getNextId(),
   previewUIID: 0,
   previewModifiable: true,
   printToPDF: true,
@@ -204,7 +203,10 @@ WebContents.prototype.executeJavaScript = function (code, hasUserGesture) {
 
 // Translate the options of printToPDF.
 WebContents.prototype.printToPDF = function (options) {
-  const printingSetting = Object.assign({}, defaultPrintingSetting)
+  const printingSetting = {
+    ...defaultPrintingSetting,
+    requestID: getNextId()
+  }
   if (options.landscape) {
     printingSetting.landscape = options.landscape
   }