second attempt at fixing hidden rows without creating
a million repeated rows. (related to tdf#98106)
This affects both .xls and .xlsx.  XLSX previously had
NO support for default-hidden(zeroHeight), but XLS already did.

Change-Id: I804e3f2ba21e595a1c2b2ebb355f0995868dd289
Reviewed-on: https://gerrit.libreoffice.org/34128Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>