Bug 18111: Fix import of default framework

Bug 18111: Fix import of default framework

Caused by bug 16035.

Recreate the issue:
Go to Home › Administration › MARC frameworks
For the default framework: Actions > import
It will not work

Test plan:
Confirm test plans from bug 16035 and bug 17389 still pass
Confirm that the import for the default framework now works

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Mason James <mtj@kohaaloha.com>
(cherry picked from commit 07eefd02ba363c6072b6370e4360a91360e31ab2)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>