ManagedMetadataLayout's range check reported offsets relative to the buffer
it was given: the metadata root for version and stream headers, and the
table stream for the tables header, row counts and table data. Other
diagnostics in the same reader already use artifact file offsets, so a
truncated table stream at file offset 888 was reported at offset 24, inside
the DOS header.
Pass each buffer's artifact file offset to the range check so every
invalid-metadata-root issue carries a file offset.
Fixes#3364
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
