### What this PR does / why we need it?
1. support ND format gmm weight input.
Before this pr, gmm1_weight and gmm2_weight could only be passed as
input to the DispatchGmmCombineDecode operator in NZ data format. After
the modification, they are allowed to be passed in ND data format.
2. support bf16/float16 gmm weight
The current PR modification enables the DispatchGmmCombineDecode
operator to support non-W8A8 scenarios, allowing gmm1_weight and
gmm2_weight to be passed as float16/bfloat16 which is correspond with
input token data type.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
- vLLM version: v0.14.1
- vLLM main:
dc917cceb8
Signed-off-by: lih827 <383084552@qq.com>
f71812011d