refactor(llc, core, ui): Deprecate .user, .userStream in favor of .currentUser, .currentUserStream

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

packages/stream_chat_flutter/lib/src/reaction_bubble.dart

@@ -123,7 +123,7 @@ class ReactionBubble extends StatelessWidget {
     );
 
     final chatThemeData = StreamChatTheme.of(context);
-    final userId = StreamChat.of(context).user?.id;
+    final userId = StreamChat.of(context).currentUser?.id;
     return Padding(
       padding: const EdgeInsets.symmetric(
         horizontal: 4,