Fix chunked upload using an obsolete batch ID in certain circumstances

Error

The scenario is quite complexe but when it happens (most likely with big files), it is quite hard to understand and debug.

I managed to reproduce the issue by uploading a 100 GB file to the intranet.

Step 1/3:

• start the upload
• it must fail at chunk N
• the upload is then blacklisted and will be retried later

Step 2/3:

• for whatever reason, its batch ID is no more valid
• resume the upload
• a new batch ID is given
• upload all chunks successfully
• server error at linking the blob to the document
• the upload is then blacklisted and will be retried later

Step 3/3:

• resume the upload
• the batch ID used to resume the upload is the first batch ID, not the second that was used at step 2

Fix

The step 3 should simply work:

• no chunks should be uploaded
• the linking should work