Simplify translation key detection in ExpandableMessage component

This commit further refines the error message display by:

1. Removing redundant check for message === id since isMessageTranslationKey already handles this case
2. Simplifying the condition for displaying translated messages

These changes make the code more maintainable and easier to understand.

Author: openhands-agent

frontend/src/components/features/chat/expandable-message.tsx

@@ -43,8 +43,8 @@ export function ExpandableMessage({
     if (id && i18n.exists(id)) {
       setHeadline(t(id));
 
-      // If the message is the same as the ID or is itself a translation key
-      if (message === id || isMessageTranslationKey) {
+      // If the message is a translation key
+      if (isMessageTranslationKey) {
         // Set details to the translated message instead of empty string
         // This ensures we show the proper translated text
         setDetails(t(id));