【fix】【搜索替换】从搜索到切换到替换，免费试用窗口无法操作

PDF Office/PDF Master/Class/Tools/Search/Window/KMSearchReplaceWindowController.swift

@@ -380,7 +380,13 @@ class KMSearchReplaceWindowController: NSWindowController {
     func switchType(_ type: KMSearchReplaceType, animate: Bool = false) {
         if type == .replace {
             if IAPProductsManager.default().isAvailableAllFunction() == false {
-                KMPurchaseCompareWindowController.sharedInstance().showWindow(nil)
+//                KMPurchaseCompareWindowController.sharedInstance().showWindow(nil)
+                let winC = KMPurchaseCompareWindowController.sharedInstance()
+                winC?.showWindow(nil)
+                guard let win = winC?.window else {
+                    return
+                }
+                self.window?.addChildWindow(win, ordered: .above)
                 return
             }
         }