OSV-2026-837 Heap-use-after-free in grk::TileProcessor::parseTilePart

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=519348401 Crash type: Heap-use-after-free READ 8 Crash state: grk::TileProcessor::parseTilePart tf::Executor::invoke tf::Executor::spawn...