more param fixes

Author: lohanidamodar

templates/dart/lib/src/chunked_upload_io.dart.twig

@@ -55,7 +55,7 @@ Future<Response> chunkedUpload({
     raf.setPositionSync(offset);
     final chunk = raf.readSync(Client.CHUNK_SIZE);
     params[paramName] =
-        http.MultipartFile.fromBytes(paramName, chunk, filename: file.fileName);
+        http.MultipartFile.fromBytes(paramName, chunk, filename: file.filename);
     headers['content-range'] =
         'bytes $offset-${min<int>(((offset + Client.CHUNK_SIZE) - 1), size)}/$size';
     res = await client.call(HttpMethod.post,

templates/flutter/lib/src/chunked_upload_io.dart.twig

@@ -55,7 +55,7 @@ Future<Response> chunkedUpload({
     raf.setPositionSync(offset);
     final chunk = raf.readSync(Client.CHUNK_SIZE);
     params[paramName] =
-        http.MultipartFile.fromBytes(paramName, chunk, filename: file.fileName);
+        http.MultipartFile.fromBytes(paramName, chunk, filename: file.filename);
     headers['content-range'] =
         'bytes $offset-${min<int>(((offset + Client.CHUNK_SIZE) - 1), size)}/$size';
     res = await client.call(HttpMethod.post,