context cancelled might be nested inside awserr

[D3Hunter]

Bug Report

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1. Minimal reproduce step (Required)

similar to #48635, this time Request cancelled is nested inside MultipartUpload

MultipartUpload: upload multipart failed\n\tupload id: MDFhZWUyZTgtZDFhOS00M2FmLWJiOGMtZmE3ZDUzMmFiM2I5LmE5YjlkY2JlLWE2MTItNDI1OC04Zjk0LTg4NTlhNzRjNTQyYw\ncaused by: RequestCanceled: request context canceled\ncaused by: context canceled

2. What did you expect to see? (Required)

3. What did you see instead (Required)

4. What is your TiDB version? (Required)