### What this PR does / why we need it? Check all expert maps when using muilty instance. ### Does this PR introduce _any_ user-facing change? None. ### How was this patch tested? Qwen 235B in double A3. case1:master has expert map, slave has not expert map. case2: master has expert map, slave has error expert map. case3: master has expert map,slave has correct expert map. - vLLM version: v0.11.0rc3 - vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0 --------- Signed-off-by: offline0806 <3337230449@qq.com> Co-authored-by: offline0806 <3337230449@qq.com>