Fix FP8 KV Triton type issue and add regression test#14553

Fridge003 merged 3 commits intosgl-project:mainsgl-project/sglang:mainfrom

harvenstar:fix-fp8-kv-b200-triton-v2harvenstar/sglang:fix-fp8-kv-b200-triton-v2Copy head branch name to clipboard