salvaged: explicitly skip salvaged file while encoding
This is a temporary measure to avoid diverging test cases (between commit time
sidedata and upgraded sidedata) while we implement salvaged tracking in the
different cases. This will be dropped soon.
Differential Revision: https://phab.mercurial-scm.org/D9122
Hello, Foobar
[b'Hello, Fo, =;:<o', b'Hello, Bar']