show reactions inline in non-message events that are in bubbles, e.g. stickers

Fixes #59.

lib/widgets/renderers/event.dart

@@ -213,7 +213,10 @@ class EventRenderer extends HookConsumerWidget {
             ),
 
             ...[
-              if (event.content is! MessageContent) ReactionRow(event),
+              if (event.content is! MessageContent &&
+                  event.content is! StickerContent &&
+                  event.content is! EncryptedContent)
+                ReactionRow(event),
 
               if (event.sendError != null && event.sendError != "not sent")
                 Padding(

lib/widgets/renderers/message.dart

@@ -275,8 +275,6 @@ class MessageRenderer extends ConsumerWidget {
                                   case final UrlElement link?)
                                 if (Uri.tryParse(link.url) case final Uri url?)
                                   UrlPreview(url),
-
-                              ReactionRow(event),
                             ],
                           ],
                         ),
@@ -298,6 +296,7 @@ class MessageRenderer extends ConsumerWidget {
                                 ),
                         _ => throw Exception("This is impossible"),
                       },
+                      if (!textOnly) ReactionRow(event),
                     ],
                   ),
                 ),