ENH Allow File.keep_archived_assets to show files archive tab

src/Extensions/FileArchiveExtension.php

@@ -73,10 +73,14 @@ public function getArchiveField()
      * The files archive is only useful if archived assets are stored
      * so this checks if this option is enabled
      *
+     * This should really only check File.keep_archived_assets, though it was originally
+     * only checking AssetControlExtension.keep_archived_assets, so keeping that for BC
+     *
      * @return boolean
     */
     public function isArchiveFieldEnabled()
     {
-        return Config::inst()->get(AssetControlExtension::class, 'keep_archived_assets');
+        return Config::inst()->get(AssetControlExtension::class, 'keep_archived_assets')
+          || Config::inst()->get(File::class, 'keep_archived_assets');
     }
 }