refactor(pairing): 移除配对视图底部导航栏的透明度设置

底部导航栏在配对视图中暂时不需要显示，因此注释掉相关代码以简化界面

lib/modules/pairing/views/pairing_view.dart

@@ -17,10 +17,10 @@ class PairingView extends GetView<PairingController> {
       body: SafeArea(
         child: _buildMainContent(isDarkMode),
       ),
-      bottomNavigationBar: Opacity(
-        opacity: 0.5,
-        child: const CommonBottomNav(currentIndex: 0),
-      ),
+      // bottomNavigationBar: Opacity(
+      //   opacity: 0.5,
+      //   child: const CommonBottomNav(currentIndex: 0),
+      // ),
     );
   }