Support internvl on Blackwell (which doesn't support fa3): add SingletonCache support to Vision{Sdpa|Triton|Ascend}Attention#13151

Fridge003 merged 9 commits intosgl-project:mainsgl-project/sglang:mainfrom

netanel-haber:bugfix/internvl-support-blackwell-via-triton-and-sdpa-singleton-attentionnetanel-haber/sglang:bugfix/internvl-support-blackwell-via-triton-and-sdpa-singleton-attentionCopy head branch name to clipboard