Regression from commit 70d1bd6ee0
(tdf#161652 editeng, RTF copy: only write used paragraph styles,
2024-06-20), type a few characters into the title placeholder shape in
Impress, switch to the Outline view, select all, copy, paste into
Writer: the resulting text nodes won't have paragraph styles, just
direct formatting.
Inspecting the produced RTF, the problem is that the styles table
started to omit unused styles, but the style -> offset mapping table
still included them, so the offset didn't match, which results in losing
the style on RTF import.
Fix the problem by building the mapping table later also also ignoring
unused paragraph styles there, to restore consistency between declaring
style entries and referring to them.
Change-Id: I9156a881543cc710eb12990f110ceefc77a1858b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176747
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
c8b607b7c0