[BUG]MoE FA supporting for DS V2 Lite(16 attention header) is incorrect

**Describe the bug**

for MoE, FA for deepseek V3(128 att header) is correct

name param: B param: N_Q param: H_Q param: N_KV param: H_KV param: d_h
FusedAttnFwd 1 4096 128 4096 128 192


While deepseek V2 lite is not, could you please help to fix? It mess seq_len with mbs
param: B param: N_Q param: H_Q param: N_KV param: H_KV param: d_h
4096 10 16 10 16 192

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param: B | param: N_Q | param: H_Q | param: N_KV | param: H_KV | param: d_h
-- | -- | -- | -- | -- | --
4096 | 10 | 16 | 10 | 16 | 192

Could you please help to fix?

**To Reproduce**
Run deepseek V2 lite in megatron-lm
https://github.com/ROCm/MAD/blob/develop/benchmark/megatron_lm/README.md

**Expected behavior**
Will see mbs and seq-len parse is opposite.

**Stack trace/logs**
https://amdcloud.sharepoint.com/sites/DatacenterPerfTeam/_layouts/15/download.aspx?UniqueId=ffd5757e4d41435b9a39d5774129cddf&e=XvOE7V

https://amdcloud.sharepoint.com/:x:/r/sites/DatacenterPerfTeam/Shared%20Documents/General/AI/Training/AI_Training/MI350_PostLaunch/PerfAnalysis/Megatron-LM/DeepSeek_V2_Lite/MI355X-dsV2Lite-prbf16seq4096tp1pp1ep8mbs4gbs-betaImg/[3800835329.xlsx](https://amdcloud.sharepoint.com/:x:/r/sites/DatacenterPerfTeam/Shared%20Documents/General/AI/Training/AI_Training/MI350_PostLaunch/PerfAnalysis/Megatron-LM/DeepSeek_V2_Lite/MI355X-dsV2Lite-prbf16seq4096tp1pp1ep8mbs4gbs-betaImg/3800835329.xlsx?d=w0054799547a94b7f8628c94a4d284bbe&csf=1&web=1&e=0Nk5Yb)?d=w0054799547a94b7f8628c94a4d284bbe&csf=1&web=1&e=0Nk5Yb

**Environment (please complete the following information):**

**Proposed fix**
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**Additional context**
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