hwDownloadBlobData function
Implementation
void hwDownloadBlobData({required List blobParts, String? filename}) {
final blob = Blob([blobParts]);
final url = Url.createObjectUrlFromBlob(blob);
AnchorElement(href: url)
..setAttribute(
'download', '${filename ?? DateTime.now().millisecondsSinceEpoch}')
..click();
// 释放 URL
Url.revokeObjectUrl(url);
}