Description of problem:
Incremental export of Library in regular format is not possible after a syncable full export in Red Hat Satellite 6

Version-Release number of selected component (if applicable):

How reproducible:

[root@vm207-21 imports]# hammer content-export complete library --organization="RedHat" --format=syncable
[..........................................................................................................................................................................................................] [100%]
Generated /var/lib/pulp/exports/RedHat/Export-Library-SYNCABLE/2.0/2024-03-25T20-52-41-05-30/metadata.json

[root@vm207-21 imports]# hammer content-export incremental library --organization="RedHat"
Could not export the library:
Unable to incrementally export. Do a Full Export on the library content before updating from the latest increment.

But the same thing works for a Content view:

[root@breakfix1-sat ~]# hammer content-export complete version \
> --content-view="cv3" \
> --version=1.0 \
> --organization="RedHat" \
> --format=syncable
[..........................................................................................................................................................................................................] [100%]
Generated /var/lib/pulp/exports/RedHat/cv3/1.0/2024-03-25T20-03-37-05-30/metadata.json

1. hammer content-export incremental version \
   > --content-view="cv3" \
   > --organization="RedHat" \
   > --version=2.0
   [..........................................................................................................................................................................................................] [100%]

DEV Tracker for https://issues.redhat.com/browse/SAT-24163
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2271431