【页面编辑】页面编辑模块下，顶部菜单栏-打印不应当置灰（偶现） -- 修复

PDF Office/PDF Master/Class/PDFWindowController/Side/LeftSide/Thumbnail/Base/KMPDFThumbViewBaseController.swift

@@ -1010,7 +1010,11 @@ extension KMPDFThumbViewBaseController {
         if (KMPDFThumbViewMenu.containsSelector(sel: action)) {
             let row = self.thumbnailView.collectionView.selectionIndexes
             if (action != KMPDFThumbViewMenu.pasteSelector) {
-                return row.count > 0
+                if action == KMPDFThumbViewMenu.printSelector {
+                    return true
+                } else {
+                    return row.count > 0
+                }
             }
             
             // paste