add textoverflow param to channel name

packages/stream_chat_flutter/lib/src/channel_name.dart

@@ -12,11 +12,15 @@ class ChannelName extends StatelessWidget {
   const ChannelName({
     Key? key,
     this.textStyle,
+    this.textOverflow = TextOverflow.ellipsis,
   }) : super(key: key);
 
   /// The style of the text displayed
   final TextStyle? textStyle;
 
+  /// How visual overflow should be handled.
+  final TextOverflow textOverflow;
+
   @override
   Widget build(BuildContext context) {
     final client = StreamChat.of(context);
@@ -71,7 +75,7 @@ class ChannelName extends StatelessWidget {
           return Text(
             title!,
             style: textStyle,
-            overflow: TextOverflow.ellipsis,
+            overflow: textOverflow,
           );
         },
       );