fix(llc): use channel partial update for slowmode

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

@@ -834,7 +834,7 @@ class Channel {
   }
 
   /// Enable slow mode
-  Future<UpdateChannelResponse> enableSlowMode({
+  Future<PartialUpdateChannelResponse> enableSlowMode({
     required int cooldownInterval,
   }) async {
     _checkInitialized();
@@ -842,7 +842,7 @@ class Channel {
   }
 
   /// Disable slow mode
-  Future<UpdateChannelResponse> disableSlowMode() async {
+  Future<PartialUpdateChannelResponse> disableSlowMode() async {
     _checkInitialized();
     return _client.disableSlowdown(id!, type);
   }

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

@@ -1248,7 +1248,7 @@ class StreamChatClient {
       );
 
   /// Enables slow mode
-  Future<UpdateChannelResponse> enableSlowdown(
+  Future<PartialUpdateChannelResponse> enableSlowdown(
     String channelId,
     String channelType,
     int cooldown,
@@ -1260,7 +1260,7 @@ class StreamChatClient {
       );
 
   /// Disables slow mode
-  Future<UpdateChannelResponse> disableSlowdown(
+  Future<PartialUpdateChannelResponse> disableSlowdown(
     String channelId,
     String channelType,
   ) async =>