[Bugfix] [Kernel] Triton attention kernels: mask out V blocks that fall outside sliding window#30887

Isotr0py merged 4 commits intovllm-project:mainvllm-project/vllm:mainfrom

tdoublep:fix-3d-kernel-swatdoublep/vllm:fix-3d-kernel-swaCopy head branch name to clipboard