allow Libre 3 heartbeat to use other sources (L2 etc)

- also comment out Nightscout treatment sync in RVC as still causing crashes

xdrip/BluetoothTransmitter/HeartBeat/Libre3HeartbeatBluetoothTransmitter.swift

@@ -97,4 +97,21 @@ class Libre3HeartBeatBluetoothTransmitter: BluetoothTransmitter {
         
     }
     
+    override func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) {
+        
+        trace("didDiscoverCharacteristicsFor for peripheral with name %{public}@, for service with uuid %{public}@", log: log, category: ConstantsLog.categoryHeartBeatLibre3, type: .info, deviceName ?? "'unknown'", String(describing:service.uuid))
+        
+        if let error = error {
+            trace("    didDiscoverCharacteristicsFor error: %{public}@", log: log, category: ConstantsLog.categoryBlueToothTransmitter, type: .error , error.localizedDescription)
+        }
+        
+        if let characteristics = service.characteristics {
+            for characteristic in characteristics {
+                peripheral.setNotifyValue(true, for: characteristic)
+            }
+        } else {
+            trace("    Did discover characteristics, but no characteristics listed. There must be some error.", log: log, category: ConstantsLog.categoryHeartBeatLibre3, type: .error)
+        }
+    }
+    
 }

xdrip/View Controllers/Root View Controller/RootViewController.swift

@@ -2230,9 +2230,9 @@ final class RootViewController: UIViewController, ObservableObject {
     @objc private func updateLabelsAndChart(overrideApplicationState: Bool = false, forceReset: Bool = false) {
         
         // TODO: Still crashing here...
-        DispatchQueue.main.async {
-            UserDefaults.standard.nightScoutSyncTreatmentsRequired = true
-        }
+//        DispatchQueue.main.async {
+//            UserDefaults.standard.nightScoutSyncTreatmentsRequired = true
+//        }
         
         // if glucoseChartManager not nil, then check if panned backward and if so then don't update the chart
         if let glucoseChartManager = glucoseChartManager  {