feat: testing mode banner + snapshot storage fields fix

src/pages/Article/ArticlePreviewPage/PreviewLeftWidget.tsx

@@ -6,6 +6,7 @@ import { observer } from "mobx-react-lite";
 export const PreviewLeftWidget = observer(() => {
   const { articleMedia, articleData } = articlesStore;
   const { language } = languageStore;
+  const body = articleData?.[language]?.body;
 
   return (
     <Paper
@@ -66,7 +67,7 @@ export const PreviewLeftWidget = observer(() => {
           {articleData?.[language]?.heading || "Название информации"}
         </Typography>
       </Box>
-      {articleData?.[language]?.body && (
+      {body && (
         <Box
           sx={{
             padding: 1,
@@ -77,7 +78,7 @@ export const PreviewLeftWidget = observer(() => {
             flexGrow: 1,
           }}
         >
-          <ReactMarkdownComponent value={articleData?.[language]?.body} />
+          <ReactMarkdownComponent value={body} />
         </Box>
       )}
     </Paper>