fix(bluetooth_manager): 在配对页面时不跳转至配对路由

添加对当前路由是否为配对页面的检查，防止在已处于配对页面时重复跳转

lib/data/services/bluetooth_manager.dart

@@ -76,7 +76,9 @@ class BluetoothManager extends GetxService {
             currentDeviceRx.value = newDevice;
 
             // 检查当前是否在OTA升级界面，如果是则不跳转
-            if (!_isInOtaUpgradePage() && !_bleManager.isConnected) {
+            if (!_isInOtaUpgradePage() &&
+                !_bleManager.isConnected &&
+                Get.currentRoute != Routes.pairing) {
               Get.toNamed(Routes.pairing, arguments: newDevice);
             } else {
               Logger.info('当前在OTA升级界面，跳过配对页面跳转');