### What this PR does / why we need it?
The env `VLLM_ASCEND_ENABLE_FUSED_MC2` should only enabled in the
decoder node during Prefill-Decode Disaggregation scenario
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Signed-off-by: wangli <wangli858794774@gmail.com>
### What this PR does / why we need it?
1. This PR cherry pick commit that contains current best performance at
3.5k/1.5k and 128k/1k from main to 0.18.0 branch.
2. This PR introduce MiniMax-M2.7 0day information to users.
3. To finish previous step we also changes MiniMax doc name from
MiniMax-M2.5.md to MiniMax-M2.md
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Signed-off-by: limuyuan <limuyuan3@huawei.com>
Co-authored-by: limuyuan <limuyuan3@huawei.com>
