HPCC-11872 Attr @compressedSize is not set for a compressed logical file

Fix implemented

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
HPCC-11872 Attr @compressedSize is not set for a compressed logical file

Update after review.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>