AssetLibrary when the download size is unknown:

hidden progress bar
added in the description the downloaded bytes
Fixes #35267

editor/plugins/asset_library_editor_plugin.cpp

@@ -435,7 +435,10 @@ void EditorAssetLibraryItemDownload::_notification(int p_what) {
 							String::humanize_size(download->get_body_size())));
 				} else {
 					// Total file size is unknown, so it cannot be displayed.
-					status->set_text(TTR("Downloading..."));
+					progress->set_modulate(Color(0, 0, 0, 0));
+					status->set_text(vformat(
+							TTR("Downloading...") + " (%s)",
+							String::humanize_size(download->get_downloaded_bytes())));
 				}
 			}