feat(samples): enable voice recording option in sample app (#2287)

Co-authored-by: Sahil Kumar <sahil@getstream.io>

Author: renefloor

sample_app/lib/pages/channel_page.dart

@@ -123,6 +123,7 @@ class _ChannelPageState extends State<ChannelPage> {
             focusNode: _focusNode,
             messageInputController: _messageInputController,
             onQuotedMessageCleared: _messageInputController.clearQuotedMessage,
+            enableVoiceRecording: true,
           ),
         ],
       ),

sample_app/lib/pages/thread_page.dart

@@ -81,6 +81,7 @@ class _ThreadPageState extends State<ThreadPage> {
             StreamMessageInput(
               focusNode: _focusNode,
               messageInputController: _messageInputController,
+              enableVoiceRecording: true,
             ),
         ],
       ),