If Elasticsearch fails part-way through a multipart upload to S3 it will
generally try and abort the upload, but it's possible that the abort
attempt also fails. In this case the upload becomes _dangling_. Dangling
uploads consume storage space, and therefore cost money, until they are
eventually aborted.
Earlier versions of Elasticsearch require users to check for dangling
multipart uploads, and to manually abort any that they find. This commit
introduces a cleanup process which aborts all dangling uploads on each
snapshot delete instead.
Closes#44971Closes#101169
e6b830e3b3