Remove duplicate file description in unrendered files

Author: edemaine

CHANGELOG.md

@@ -7,6 +7,10 @@ To see every change with descriptions aimed at developers, see
 As a continuously updated web app, Coauthor uses dates
 instead of version numbers.
 
+## 2025-02-06
+
+* Remove duplicate file description in unrendered files (non-images/videos/PDFs)
+
 ## 2025-01-15
 
 * Prevent repeating password in full-name field when signing up for account

client/message.coffee

@@ -2850,7 +2850,8 @@ export WrappedSubmessage = React.memo ({message, read}) ->
         {if previewSideBySide
           <BelowEditor message={message} preview={preview} safeToStopEditing={safeToStopEditing} editStopping={editStopping}/>
         }
-        {if historified.file and editing
+        {if historified.file and editing and (messageFileType == 'pdf' or formattedFile.file)
+          # Duplicate file description above rendered file (if it renders)
           <MessageFileDescription message={message} history={history}
             messageFileType={messageFileType}
             description={formattedFile.description}