bailingMoE: Fix Key error of deepep_mode (#11465)

Signed-off-by: Michael Qiu <qiudayu.qdy@antgroup.com>
Co-authored-by: Mike_Qiu <qiudayu.qdy@antgroup.com>

python/sglang/srt/models/bailing_moe.py

@@ -54,7 +54,7 @@ from sglang.srt.layers.linear import (
     RowParallelLinear,
 )
 from sglang.srt.layers.logits_processor import LogitsProcessor
-from sglang.srt.layers.moe import get_moe_a2a_backend
+from sglang.srt.layers.moe import get_deepep_mode, get_moe_a2a_backend
 from sglang.srt.layers.moe.ep_moe.layer import get_moe_impl_class
 from sglang.srt.layers.moe.fused_moe_triton.layer import FusedMoE
 from sglang.srt.layers.moe.token_dispatcher import DeepEPDispatcher
@@ -293,7 +293,7 @@ class BailingMoESparseMoeBlock(nn.Module):
                 num_local_experts=config.num_experts // self.tp_size,
                 hidden_size=config.hidden_size,
                 params_dtype=config.torch_dtype,
-                deepep_mode=DeepEPMode[global_server_args_dict["deepep_mode"]],
+                deepep_mode=get_deepep_mode(),
                 async_finish=True,  # TODO
                 return_recv_hook=True,
             )