Fix S3BlobScroll on Blob Provider with KeyStrategyDocId

As described in NXP-32180, an S3BlobProvider using a S3 bucket with versioning enabled AND with a KeyStrategyDocId (such as the record blob provider) stores blobs in a s3 bucket with keys of the form :

{providerId}:{docId}@{versionId}

However, when scrolling the blobs of such a provider, we only list the objects of the bucket (not each version) and we end up with keys like:

{providerId}:{docId}

which produces invalid keys that are not garbage collected (i.e. ignored) during a Full GC.

However, the record blob provider does not create orphaned blobs as mentioned in NXP-32787, and should not be garbage collected anyway.