添加扫描标记为原子性代码

local_plugins/ble_service/android/src/main/kotlin/com/yunqiinnovation/ble_service/BleService.kt

@@ -89,6 +89,7 @@ object BleService {
     // 扫描相关
     private lateinit var scanHandler: Handler
     private val scanResults = ArrayList<ScanResult>()
+    @Volatile
     private var isScanning = false
 
     // 是否是ota模式