fix(app): fix upload progress bar from getting stuck at zero (#1581)

fluxer_app/src/features/messaging/upload/CloudUpload.ts

@@ -488,7 +488,6 @@ class CloudUploadManager {
 			return {
 				...upload,
 				stage: 'uploading' as const,
-				sendingProgress: upload.sendingProgress ?? 0,
 				attachments,
 			};
 		});