fix: update language display logic in Shiki code highlighter

- Modified the language display condition to show an empty div for plaintext instead of rendering the language name and icon.
- This change improves the clarity of the code highlighter by avoiding unnecessary elements for plaintext.

Signed-off-by: Innei <tukon479@gmail.com>

apps/desktop/layer/renderer/src/components/ui/code-highlighter/shiki/Shiki.tsx

@@ -193,7 +193,9 @@ const ShikiCode: FC<
       )}
     >
       <div className="flex items-center justify-between border-b p-2">
-        {language !== "plaintext" && (
+        {language === "plaintext" ? (
+          <div />
+        ) : (
           <span className="center flex gap-1 text-xs uppercase opacity-80 dark:text-white">
             <span className="center [&_svg]:size-4">{getLanguageIcon(language)}</span>
             <span>{language}</span>

apps/desktop/layer/renderer/src/modules/entry-content/index.electron.tsx

@@ -99,7 +99,7 @@ export const EntryContent: Component<EntryContentProps> = ({
       EventBus.subscribe(COMMAND_ID.timeline.switchToNext, scrollAndFocus),
       EventBus.subscribe(COMMAND_ID.timeline.switchToPrevious, scrollAndFocus),
     )
-  }, [])
+  }, [entryId])
 
   const safeUrl = useFeedSafeUrl(entryId)