[Bug] Fix cpu disable shared_experts VLLM_DISABLE_SHARED_EXPERTS_STREAM (#28157)

Signed-off-by: yewentao256 <[email protected]>

Author: yewentao256

vllm/platforms/cpu.py

@@ -299,7 +299,7 @@ def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
         os.environ["TORCHINDUCTOR_COMPILE_THREADS"] = "1"
 
         # Disable multi-stream for shared experts as no Stream on CPU
-        os.environ["VLLM_DISABLE_SHARED_EXPERTS_STREAM"] = "0"
+        os.environ["VLLM_DISABLE_SHARED_EXPERTS_STREAM"] = "1"
 
         # Intel OpenMP setting
         ld_preload_str = os.getenv("LD_PRELOAD", "")