Bug 24328: Fix bibliographic frameworks install (linkid)

Bug 24328: Fix bibliographic frameworks install (linkid)

With strict mode enabled (tested with MariaDB 10.4.11)

ERROR 1366 (22007) at line 8029: Incorrect integer value: '' for column
`koha_kohadev`.`auth_subfield_structure`.`linkid` at row 769

Test plan:
Insert the .sql files from this patch and confirm that you can now
insert them correctly

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>