[ROCm][CI] Fix tool use test stability - disable skinny GEMM, prefix caching, eliminate batch variance#35553

DarkLight1337 merged 8 commits intovllm-project:mainvllm-project/vllm:mainfrom

ROCm:akaratza_entrypoint_server_iROCm/vllm:akaratza_entrypoint_server_iCopy head branch name to clipboard