opt: dynamic panel

lib/pages/dynamics/widgets/content_panel_grpc.dart

@@ -38,7 +38,7 @@ class ContentGrpc extends StatelessWidget {
   Widget build(BuildContext context) {
     TextStyle authorStyle =
         TextStyle(color: Theme.of(context).colorScheme.primary);
-
+    InlineSpan? richNodes = richNode(item, context);
     return Container(
       width: double.infinity,
       padding: const EdgeInsets.fromLTRB(12, 0, 12, 6),
@@ -53,22 +53,23 @@ class ContentGrpc extends StatelessWidget {
               ),
             ),
           ],
-          IgnorePointer(
-            // 禁用SelectableRegion的触摸交互功能
-            ignoring: source == 'detail' ? false : true,
-            child: SelectableRegion(
-              magnifierConfiguration: const TextMagnifierConfiguration(),
-              focusNode: FocusNode(),
-              selectionControls: MaterialTextSelectionControls(),
-              child: Text.rich(
-                /// fix 默认20px高度
-                style: const TextStyle(height: 0),
-                richNode(item, context),
-                maxLines: source == 'detail' ? 999 : 6,
-                overflow: TextOverflow.ellipsis,
+          if (richNodes != null)
+            IgnorePointer(
+              // 禁用SelectableRegion的触摸交互功能
+              ignoring: source == 'detail' ? false : true,
+              child: SelectableRegion(
+                magnifierConfiguration: const TextMagnifierConfiguration(),
+                focusNode: FocusNode(),
+                selectionControls: MaterialTextSelectionControls(),
+                child: Text.rich(
+                  /// fix 默认20px高度
+                  style: const TextStyle(height: 0),
+                  richNodes,
+                  maxLines: source == 'detail' ? 999 : 6,
+                  overflow: TextOverflow.ellipsis,
+                ),
               ),
             ),
-          ),
           if (item.modules.first.moduleDynamic.hasDynDraw())
             Text.rich(
               picsNodes(),