Clarify expectedSize behaviour of ReleasableBytesStreamOutput#142451

DaveCTurner merged 1 commit intoelastic:mainelastic/elasticsearch:mainfrom

DaveCTurner:2026/02/13/ReleasableBytesStreamOutput-clarify-expectedSizeDaveCTurner/elasticsearch:2026/02/13/ReleasableBytesStreamOutput-clarify-expectedSizeCopy head branch name to clipboard