Fix UITest_options: changed property name
Seems the color widget was changed into a tree at some point, so
the entry amount is now in "Children" instead of "EntryCount".
Change-Id: Ief6e6d0ebc4a6571a7f7e978b838eb49b2e051cf
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/88831
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/96082
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Andras Timar <andras.timar@collabora.com>