fix: Do display error image widget

lib/pages/chat/events/image_bubble.dart

@@ -190,30 +190,26 @@ class _ImageBubbleState extends State<ImageBubble> {
     final String filename = widget.event.content.containsKey('filename')
         ? widget.event.content['filename']
         : widget.event.body;
-    return Center(
+    return getPlaceholderWidget(
       child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
         mainAxisSize: MainAxisSize.min,
         children: [
-          ElevatedButton(
+          OutlinedButton.icon(
-            style: ElevatedButton.styleFrom(
+            style: OutlinedButton.styleFrom(
-              primary: Theme.of(context).scaffoldBackgroundColor,
+              backgroundColor: Theme.of(context).scaffoldBackgroundColor,
-              onPrimary: Theme.of(context).textTheme.bodyText1.color,
+              primary: Theme.of(context).textTheme.bodyText1.color,
             ),
+            icon: const Icon(Icons.download_outlined),
             onPressed: () => widget.event.saveFile(context),
-            child: Row(
+            label: Text(
-              mainAxisSize: MainAxisSize.min,
-              children: [
-                const Icon(Icons.download_outlined),
-                const SizedBox(width: 8),
-                Text(
               filename,
               overflow: TextOverflow.fade,
               softWrap: false,
               maxLines: 1,
             ),
-              ],
-            ),
           ),
+          const SizedBox(height: 8),
           if (widget.event.sizeString != null) Text(widget.event.sizeString),
           const SizedBox(height: 8),
           Text((error ?? _error).toString()),
@@ -357,10 +353,10 @@ class _ImageBubbleState extends State<ImageBubble> {
               crossAxisAlignment: CrossAxisAlignment.start,
               mainAxisSize: MainAxisSize.min,
               children: [
-                ElevatedButton(
+                OutlinedButton(
-                  style: ElevatedButton.styleFrom(
+                  style: OutlinedButton.styleFrom(
-                    primary: Theme.of(context).scaffoldBackgroundColor,
+                    backgroundColor: Theme.of(context).scaffoldBackgroundColor,
-                    onPrimary: Theme.of(context).textTheme.bodyText1.color,
+                    primary: Theme.of(context).textTheme.bodyText1.color,
                   ),
                   onPressed: () => onTap(context),
                   child: Text(
@@ -370,8 +366,10 @@ class _ImageBubbleState extends State<ImageBubble> {
                     maxLines: 1,
                   ),
                 ),
-                if (widget.event.sizeString != null)
+                if (widget.event.sizeString != null) ...[
+                  const SizedBox(height: 8),
                   Text(widget.event.sizeString),
+                ]
               ],
             ));
           }

lib/pages/chat/events/message_content.dart

@@ -83,20 +83,14 @@ class MessageContent extends StatelessWidget {
       case EventTypes.Sticker:
         switch (event.messageType) {
           case MessageTypes.Image:
-            if (event.showThumbnail) {
             return ImageBubble(
               event,
               width: 400,
               height: 300,
               fit: BoxFit.cover,
             );
-            }
-            return MessageDownloadContent(event, textColor);
           case MessageTypes.Sticker:
-            if (event.showThumbnail) {
             return Sticker(event);
-            }
-            return MessageDownloadContent(event, textColor);
           case MessageTypes.Audio:
             if (PlatformInfos.isMobile) {
               return AudioPlayerWidget(