refactor(CodeViewer): make children prop optional for improved flexibility

src/renderer/src/components/CodeViewer.tsx

@@ -19,7 +19,7 @@ interface CodeViewerProps {
    * - Supports shiki aliases: c#/csharp, objective-c++/obj-c++/objc++, etc.
    */
   language: string
-  children: React.ReactNode
+  children?: React.ReactNode
   onHeightChange?: (scrollHeight: number) => void
   /**
    * Height of the scroll container.

src/renderer/src/pages/home/Messages/Blocks/ErrorBlock.tsx

@@ -337,9 +337,12 @@ const AiApiCallError = ({ error }: { error: SerializedAiSdkAPICallError }) => {
       {error.responseBody && (
         <ErrorDetailItem>
           <ErrorDetailLabel>{t('error.responseBody')}:</ErrorDetailLabel>
-          <CodeViewer className="source-view" language="json" expanded>
-            {JSON.stringify(error.responseBody, null, 2)}
-          </CodeViewer>
+          <CodeViewer
+            className="source-view"
+            language="json"
+            expanded
+            value={JSON.stringify(error.responseBody, null, 2)}
+          />
         </ErrorDetailItem>
       )}