fdo#73352 firebird don't claim to support interfaces one doesn't

and then throw an exception when the interface is used

Change-Id: Id5e2c852323d49f51ab55cf46ab54223cf8ccf03
Reviewed-on: https://gerrit.libreoffice.org/9594
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>