By default Rectangle uses closed interval, if we really want to use half
open intervals then we should specifically say as such in the name.
Change-Id: Id7a91120ba1a1a4bc330014216b73a692dbf03a2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/136575
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>