devel/kio-extras: rename EXR option to OPENEXR
to match the rest of the ports tree and ports/Mk/bsd.options.desc.mk.
Also changes the conditional in pkg-plist.
(cherry picked from commit aab41cf39da4422d5c198498abed542afd20a7a9)
Approved by: kde@ (maintainer, namely makc@) with request for...
MFH: 2025Q3