Fixed a bug where open group messages sent on another device weren't correctly getting marked as sent

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

@@ -276,6 +276,8 @@ extension MessageReceiver {
     ) throws {
         guard variant == .standardOutgoing else { return }
         
+        switch thread.variant {
+            case .contact:
                 if let syncTarget: String = syncTarget {
                     try RecipientState(
                         interactionId: interactionId,
@@ -283,7 +285,8 @@ extension MessageReceiver {
                         state: .sent
                     ).save(db)
                 }
-        else if thread.variant == .closedGroup {
+                
+            case .closedGroup:
                 try GroupMember
                     .filter(GroupMember.Columns.groupId == thread.id)
                     .fetchAll(db)
@@ -294,6 +297,13 @@ extension MessageReceiver {
                             state: .sent
                         ).save(db)
                     }
+                
+            case .openGroup:
+                try RecipientState(
+                    interactionId: interactionId,
+                    recipientId: thread.id, // For open groups this will always be the thread id
+                    state: .sent
+                ).save(db)
         }
     
         // For outgoing messages mark all older interactions as read (the user should have seen