fix a case when the app goes into background with an ongoing call

Session/Calls/Call Management/SessionCall.swift

@@ -113,12 +113,12 @@ public final class SessionCall: CurrentCallProtocol, WebRTCSessionDelegate {
         set { connectingDate = newValue ? Date() : nil }
     }
 
-    var hasConnected: Bool {
+    public var hasConnected: Bool {
         get { return connectedDate != nil }
         set { connectedDate = newValue ? Date() : nil }
     }
 
-    var hasEnded: Bool {
+    public var hasEnded: Bool {
         get { return endDate != nil }
         set { endDate = newValue ? Date() : nil }
     }

Session/Meta/AppDelegate.swift

@@ -132,11 +132,13 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
         
         // NOTE: Fix an edge case where user taps on the callkit notification
         // but answers the call on another device
-        stopPollers(shouldStopUserPoller: !self.hasIncomingCallWaiting())
+        stopPollers(shouldStopUserPoller: !self.hasCallOngoing())
         
         // Stop all jobs except for message sending and when completed suspend the database
         JobRunner.stopAndClearPendingJobs(exceptForVariant: .messageSend) {
-            NotificationCenter.default.post(name: Database.suspendNotification, object: self)
+            if !self.hasCallOngoing() {
+                NotificationCenter.default.post(name: Database.suspendNotification, object: self)
+            }
         }
     }
     
@@ -634,6 +636,12 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
         return !call.hasStartedConnecting
     }
     
+    func hasCallOngoing() -> Bool {
+        guard let call = AppEnvironment.shared.callManager.currentCall else { return false }
+        
+        return !call.hasEnded
+    }
+    
     func handleAppActivatedWithOngoingCallIfNeeded() {
         guard
             let call: SessionCall = (AppEnvironment.shared.callManager.currentCall as? SessionCall),

SessionMessagingKit/Calls/CurrentCallProtocol.swift

@@ -9,6 +9,7 @@ public protocol CurrentCallProtocol {
     var callId: UUID { get }
     var webRTCSession: WebRTCSession { get }
     var hasStartedConnecting: Bool { get set }
+    var hasEnded: Bool { get set }
     
     func updateCallMessage(mode: EndCallMode)
     func didReceiveRemoteSDP(sdp: RTCSessionDescription)