graphics/tiff: Fix CVE-2026-4775
Backport upstream commit 782a11d6b5b61c6dc21e714950a4af5bf89f023c
Reference:
https://gitlab.com/libtiff/libtiff/-/commit/782a11d6b5b61c6dc21e714950a4af5bf89f023c
PR: 294370
Reviewed by: desktop (arrowd)
(cherry picked from commit a7af345cb919c0cab70b0801abaff2b528f1eaff)