fix(PdfPreview): 启用pdfImageView以正确显示PDF图像

修复PDF预览组件中pdfImageView选项被错误禁用的问题，确保PDF图像能够正确显示。

@@ -34,7 +34,6 @@ declare module 'vue' {
     VanCheckbox: typeof import('vant/es')['Checkbox']
     VanDatePicker: typeof import('vant/es')['DatePicker']
     VanDialog: typeof import('vant/es')['Dialog']
-    VanDivider: typeof import('vant/es')['Divider']
     VanEmpty: typeof import('vant/es')['Empty']
     VanField: typeof import('vant/es')['Field']
     VanForm: typeof import('vant/es')['Form']

@@ -56,7 +56,7 @@ const initPdfViewer = () => {
             pdfOption: {
                 search: false,
                 scale: true,
-                pdfImageView: false,
+                pdfImageView: true,
                 page: true,
                 navShow: true,
                 navigationShow: false,