fix: pre release (#324)

* use share_plus plugin

* bump dependency versions

* fix ui for web

* unfocus messageinput only on commands

* fix default error for messagesearchlistview

* fix thumbnail animation

packages/stream_chat_flutter/lib/src/channel_image.dart

@@ -96,7 +96,11 @@ class ChannelImage extends StatelessWidget {
                 initialData: otherMember.user,
                 builder: (context, snapshot) {
                   return UserAvatar(
-                    borderRadius: borderRadius,
+                    borderRadius: borderRadius ??
+                        StreamChatTheme.of(context)
+                            .channelPreviewTheme
+                            .avatarTheme
+                            .borderRadius,
                     user: snapshot.data ?? otherMember.user,
                     constraints: constraints ??
                         StreamChatTheme.of(context)
@@ -120,7 +124,11 @@ class ChannelImage extends StatelessWidget {
                 .toList();
             return GroupImage(
               images: images,
-              borderRadius: borderRadius,
+              borderRadius: borderRadius ??
+                  StreamChatTheme.of(context)
+                      .channelPreviewTheme
+                      .avatarTheme
+                      .borderRadius,
               constraints: constraints ??
                   StreamChatTheme.of(context)
                       .channelPreviewTheme