Fix an issue that a call might be shown after handled in background with CallKit and then opening the app

SessionMessagingKit/Sending & Receiving/Errors/MessageReceiverError.swift

@@ -23,6 +23,7 @@ public enum MessageReceiverError: LocalizedError {
     case invalidConfigMessageHandling
     case requiredThreadNotInConfig
     case outdatedMessage
+    case duplicatedCall
 
     public var isRetryable: Bool {
         switch self {
@@ -72,6 +73,7 @@ public enum MessageReceiverError: LocalizedError {
             case .invalidConfigMessageHandling: return "Invalid handling of a config message."
             case .requiredThreadNotInConfig: return "Required thread not in config."
             case .outdatedMessage: return "Message was sent before a config change which would have removed the message."
+            case .duplicatedCall: return "Duplicate call."
         }
     }
 }

SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+Calls.swift

@@ -270,12 +270,15 @@ extension MessageReceiver {
         state: CallMessage.MessageInfo.State? = nil,
         using dependencies: Dependencies
     ) throws -> Interaction? {
-        guard
-            (try? Interaction
+        guard (
+            try? Interaction
                 .filter(Interaction.Columns.variant == Interaction.Variant.infoCall)
                 .filter(Interaction.Columns.messageUuid == message.uuid)
-                .isEmpty(db))
-                .defaulting(to: false),
+                .isEmpty(db)
+        ).defaulting(to: false)
+        else { throw MessageReceiverError.duplicatedCall }
+        
+        guard
             let sender: String = message.sender,
             let thread: SessionThread = try SessionThread.fetchOne(db, id: sender),
             !thread.isMessageRequest(db)