CLSA-2026-1778110872 xorg-x11-server-Xwayland: Fix of 3 CVEs

CVE-2024-0408: fix XSELinux crash by calling XACE hooks when creating GLX buffers - CVE-2025-49175: fix out-of-bounds read in animated cursor creation when client provides zero cursors - CVE-2025-49178: fix possible client request hang caused by leftover bytes-to-ignore when sharing input buffer...