fix: add flag to avoid thread cleanup when updating channel state

src/channel_state.ts

@@ -243,7 +243,12 @@ export class ChannelState {
             .state.updateUserReference(message.user, this._channel.cid);
         }
 
-        if (initializing && message.id && this.threads[message.id]) {
+        if (
+          initializing &&
+          message.id &&
+          this.threads[message.id] &&
+          !this._channel.getClient().preventThreadCleanup
+        ) {
           // If we are initializing the state of channel (e.g., in case of connection recovery),
           // then in that case we remove thread related to this message from threads object.
           // This way we can ensure that we don't have any stale data in thread object

src/client.ts

@@ -321,6 +321,11 @@ export class StreamChat {
    * manually calling queryChannels endpoint.
    */
   recoverStateOnReconnect?: boolean;
+  /**
+   * If true, we will not clean up threads when channel state is in initializing state.
+   * The main use case for SDKs who do independent state recovery for channels.
+   */
+  preventThreadCleanup = false;
   moderation: Moderation;
   mutedChannels: ChannelMute[];
   mutedUsers: Mute[];