Resolves fdo#82500: Operators missing in Standard Filter

Regression from http://cgit.freedesktop.org/libreoffice/core/commit/?id=be88126e80b1f6b9a3090ba4617d9a87dfb0a0bd

Cherry-picked from 3d16e8593ac1e9d90f0a033732766907476822f9

Change-Id: I4f03fbf4e6e6a0f6a901cadb87494baa92d66895
Reviewed-on: https://gerrit.libreoffice.org/12328
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>