feat: add mtp ut and fix some bugs (#2453)

### What this PR does / why we need it?
Fix mtp mode ut

### Does this PR introduce _any_ user-facing change?
Nothing

### How was this patch tested?
This can be tested in the same way as a unit test.


- vLLM version: v0.10.0
- vLLM main:
53415653ff

Signed-off-by: 赵江江 <zhaojiangjiang1@h-partners.com>
Co-authored-by: 赵江江 <zhaojiangjiang1@h-partners.com>

vllm_ascend/quantization/quant_config.py

@@ -102,7 +102,7 @@ class AscendQuantConfig(QuantizationConfig):
         elif isinstance(layer, FusedMoE):
             if self.is_layer_skipped_ascend(prefix,
                                             self.packed_modules_mapping):
-                return AscendUnquantizedFusedMoEMethod(layer.moe)
+                return AscendUnquantizedFusedMoEMethod(layer.moe_config)
             return AscendFusedMoEMethod(self, prefix,
                                         self.packed_modules_mapping)
         elif isinstance(layer, VocabParallelEmbedding):