The export wrote a single shopdb-flask-pub.bundle whatever it published. That
was fine while only main was ever published, and became a trap the moment it was
not: exporting a site branch silently overwrote the bundle holding main's work,
and the work PC's documented "git fetch <bundle> main" then failed because that
ref was no longer in the file.
It had already happened here - two wj exports overwrote a main bundle from the
same morning. The failure is at least loud on the work PC rather than pushing
the wrong branch, but the main bundle has to be regenerated.
Now shopdb-flask-pub-<branch>.bundle. Two branches cannot share one filename.
Scope: product
(cherry picked from commit 1311dea113)
e65053feeb