fdo#82106 RTF import: fix missing tab after special footnote

(cherry picked from commit 8ae087b8fcc25f5ce83e339d447d2899d3059d45)

Change-Id: I5ea45dbed652231acdcc3632ced728ed8bcb621a
Reviewed-on: https://gerrit.libreoffice.org/10861
Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>