fix(drivers/guangyapan): report multipart upload progress to copy task (#2989)

multipartUploadToOSS passed the UpdateProgress callback into
stream.NewStreamSectionReader, which ignores the up argument, so the
callback was never invoked while uploading parts. As a result,
cross-storage copy tasks targeting GuangYaPan stayed at 0% and showed no
progress bar or speed in the task list.

Fix by tracking the uploaded byte count and invoking up after every
part is uploaded, keeping consistent with other drivers' upload flow.

Co-authored-by: Pikachu Ren <40362270+PIKACHUIM@users.noreply.github.com>

drivers/guangyapan/util.go

@@ -241,6 +241,7 @@ func (d *GuangYaPan) multipartUploadToOSS(ctx context.Context, bucket *oss.Bucke
 	}
 
 	parts := make([]oss.UploadPart, 0, partCount)
+	var uploaded int64
 	for i := 0; i < partCount; i++ {
 		if utils.IsCanceled(ctx) {
 			return ctx.Err()
@@ -273,6 +274,10 @@ func (d *GuangYaPan) multipartUploadToOSS(ctx context.Context, bucket *oss.Bucke
 			return fmt.Errorf("failed to upload part %d: %w", i+1, err)
 		}
 		parts = append(parts, part)
+		uploaded += length
+		if total > 0 {
+			up(100 * float64(uploaded) / float64(total))
+		}
 	}
 
 	_, err = bucket.CompleteMultipartUpload(imur, parts)