更新沃棣背景适配

lib/pages/user/privacy_scheme_page.dart

@@ -41,7 +41,7 @@ class _PrivacySchemePageState extends State<PrivacySchemePage> {
         child: Container(
           decoration: BoxDecoration(
             image: DecorationImage(
-              image: AssetImage('assets/img/bgNoImg.png'), // 本地图片
+              image: AssetImage(getBackgroundImageNoImage()), // 本地图片
               fit: BoxFit.fill, // 填满整个 Container
             ),
           ),
@@ -93,12 +93,14 @@ class _PrivacySchemePageState extends State<PrivacySchemePage> {
                     Expanded(
                       child: Obx(() {
                         if (pdfController.localPdfPath.value == null) {
-                          return Center(child:CircularProgressIndicator(
-                        strokeWidth: 2,
-                        valueColor: AlwaysStoppedAnimation<Color>(
-                          themeController.currentColor.sc1,
-                        ),
-                      ),);
+                          return Center(
+                            child: CircularProgressIndicator(
+                              strokeWidth: 2,
+                              valueColor: AlwaysStoppedAnimation<Color>(
+                                themeController.currentColor.sc1,
+                              ),
+                            ),
+                          );
                         } else {
                           return PDFView(
                             filePath: pdfController.localPdfPath.value!,