fix reaction bubble

packages/stream_chat_flutter/lib/src/reaction_bubble.dart

@@ -37,7 +37,6 @@ class ReactionBubble extends StatelessWidget {
     return Transform(
       transform: Matrix4.rotationY(reverse ? pi : 0),
       alignment: Alignment.center,
-      child: Center(
       child: Stack(
         alignment: Alignment.center,
         fit: StackFit.loose,
@@ -101,7 +100,6 @@ class ReactionBubble extends StatelessWidget {
           ),
         ],
       ),
-      ),
     );
   }
 

packages/stream_chat_flutter/pubspec.yaml

@@ -18,7 +18,7 @@ dependencies:
   rxdart: ^0.26.0
   scrollable_positioned_list: ^0.1.8
   jiffy: ^3.0.1
-  flutter_svg: ">=0.21.0-nullsafety.0 <0.21.0"
+  flutter_svg: ^0.21.0
   flutter_portal: ^0.3.0
   cached_network_image: ">=3.0.0-nullsafety <3.0.0"
   shimmer: ^1.1.2