[Bugfix] Address #8009 and add model test for flashinfer fp8 kv cache.#8013

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

pavanimajety:dispatch-uint8-flashinfer-bugpavanimajety/vllm:dispatch-uint8-flashinfer-bugCopy head branch name to clipboard