Android crash when stopScanning is called with switched off BLE adapter

[squio]

Describe the bug
Calling stopLEScan() when no BleAdapter state is OFF crashes with IllegalStateException

To Reproduce

• Create script which calls BleClient.requestLEScan()
• Add BleClient.stopLEScan(); in a timeout or call it manually

I was not able to reproduce this myself but got crash logs from different devices in Android Play console; unfortunately no user reports 😢
See below for devices and crash logs

Expected behavior
Call to stopLEScan() will not cause an error

Screenshots
If applicable, add screenshots to help explain your problem.

Plugin version:

• @capacitor-community/bluetooth-le: 1.8.0

Desktop (please complete the following information):

• N/A

Smartphone (please complete the following information):

• Device: Motorola edge 20 /Fairphone3
• OS: Android 11 / Android 12
• Browser: System WebView
• Version N/A

Additional context

Full crash report (Motorola device, Android 11):

java.lang.RuntimeException: 
  at com.getcapacitor.Bridge.lambda$callPluginMethod$0$com-getcapacitor-Bridge (Bridge.java:601)
  at com.getcapacitor.Bridge$$ExternalSyntheticLambda5.run (Unknown Source:8)
  at android.os.Handler.handleCallback (Handler.java:938)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loop (Looper.java:250)
  at android.os.HandlerThread.run (HandlerThread.java:67)
Caused by: java.lang.reflect.InvocationTargetException: 
  at java.lang.reflect.Method.invoke (Native Method)
  at com.getcapacitor.PluginHandle.invoke (PluginHandle.java:121)
  at com.getcapacitor.Bridge.lambda$callPluginMethod$0$com-getcapacitor-Bridge (Bridge.java:592)
Caused by: java.lang.IllegalStateException: 
  at android.bluetooth.le.BluetoothLeUtils.checkAdapterStateOn (BluetoothLeUtils.java:177)
  at android.bluetooth.le.BluetoothLeScanner.stopScan (BluetoothLeScanner.java:285)
  at com.capacitorjs.community.plugins.bluetoothle.DeviceScanner.stopScanning (DeviceScanner.kt:138)
  at com.capacitorjs.community.plugins.bluetoothle.BluetoothLe.stopLEScan (BluetoothLe.kt:356)

I can submit a PR with the following code if you agree this would be a good solution:

In BluetoothLe.kt, line 353:

    @PluginMethod
    fun stopLEScan(call: PluginCall) {
        assertBluetoothAdapter(call) ?: return
        try {
            deviceScanner?.stopScanning()
        }
        catch (e: IllegalStateException) {
            Log.e(TAG, "Error in stopLEScan: ${e.localizedMessage}")
        }
        call.resolve()
    }

[pwespi]

closed by #318