[BugFix]Fix eplb problems when using dynamic eplb. (#3364)

### What this PR does / why we need it?
When using dynamic eplb,it will be blocking by nz tensor.We fix these
prolems by clone src tensor and recv tensor.

### Does this PR introduce any user-facing change?

### How was this patch tested?
Qwen3_moe in A3.

- 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>

vllm_ascend/ops/moe/moe_comm_method.py

@@ -150,7 +150,8 @@ class MoECommMethod(ABC):
                                        with_quant=use_int8_w8a8
                                        or use_int4_w4a8,
                                        fusion=use_int8_w8a8,
-                                       need_trans=need_trans)
+                                       need_trans=need_trans,
+                                       dynamic_eplb=dynamic_eplb)
 
         final_hidden_states = self.token_dispatcher.token_combine(
             hidden_states=mlp_output)