feat(llc): add hide_history flag in channel.addMembers.

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat/lib/src/client/channel.dart

@@ -1151,9 +1151,18 @@ class Channel {
   Future<AddMembersResponse> addMembers(
     List<String> memberIds, [
     Message? message,
+    // TODO: Convert to optional parameters in v5.0.0
+    // ignore: avoid_positional_boolean_parameters
+    bool hideHistory = false,
   ]) async {
     _checkInitialized();
-    return _client.addChannelMembers(id!, type, memberIds, message: message);
+    return _client.addChannelMembers(
+      id!,
+      type,
+      memberIds,
+      message: message,
+      hideHistory: hideHistory,
+    );
   }
 
   /// Invite members to the channel.

packages/stream_chat/lib/src/client/client.dart

@@ -1044,12 +1044,14 @@ class StreamChatClient {
     String channelType,
     List<String> memberIds, {
     Message? message,
+    bool hideHistory = false,
   }) =>
       _chatApi.channel.addMembers(
         channelId,
         channelType,
         memberIds,
         message: message,
+        hideHistory: hideHistory,
       );
 
   /// Remove members from the channel

packages/stream_chat/lib/src/core/api/channel_api.dart

@@ -210,12 +210,14 @@ class ChannelApi {
     String channelType,
     List<String> memberIds, {
     Message? message,
+    bool hideHistory = false,
   }) async {
     final response = await _client.post(
       _getChannelUrl(channelId, channelType),
       data: {
         'add_members': memberIds,
         'message': message,
+        'hide_history': hideHistory,
       },
     );
     return AddMembersResponse.fromJson(response.data);