fix(list-message): remove duplicate header in nativeList conversion

When title is not provided, the text was used as fallback for both
title and description, causing the header to appear twice. Now title
only uses an explicit title field, description uses text.

https://claude.ai/code/session_01SJdSHiUxtwzV8bb5dedodb

src/Utils/messages.ts

@@ -1081,7 +1081,7 @@ export const generateWAMessageContent = async (
 		// Legacy format (listMessage) works on all platforms
 		const generated = generateListMessageLegacy(
 			{ sections: listMsg.nativeList.sections },
-			listMsg.title || listMsg.text || '',
+			listMsg.title || '',
 			listMsg.text || '',
 			listMsg.nativeList.buttonText,
 			listMsg.footer