resolve a race condition of expireTimerUpdate and configUpdate

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

@@ -164,7 +164,7 @@ extension MessageReceiver {
         
         guard
             let localLastChangeTimestampMs = localConfig.lastChangeTimestampMs,
-            protoLastChangeTimestampMs > localLastChangeTimestampMs
+            protoLastChangeTimestampMs >= localLastChangeTimestampMs
         else { return }
         
         let durationSeconds: TimeInterval = (proto.hasExpirationTimer ? TimeInterval(proto.expirationTimer) : 0)
@@ -180,13 +180,9 @@ extension MessageReceiver {
             lastChangeTimestampMs: protoLastChangeTimestampMs
         )
         
+        if localConfig != remoteConfig {
             _ = try remoteConfig.save(db)
             
-        _ = try Interaction
-            .filter(Interaction.Columns.threadId == threadId)
-            .filter(Interaction.Columns.variant == Interaction.Variant.infoDisappearingMessagesUpdate)
-            .deleteAll(db)
-        
             // Contacts & legacy closed groups need to update the SessionUtil
             switch threadVariant {
                 case .contact:
@@ -207,6 +203,12 @@ extension MessageReceiver {
                     
                 default: break
             }
+        }
+        
+        _ = try Interaction
+            .filter(Interaction.Columns.threadId == threadId)
+            .filter(Interaction.Columns.variant == Interaction.Variant.infoDisappearingMessagesUpdate)
+            .deleteAll(db)
 
         _ = try Interaction(
             serverHash: message.serverHash,