[XPU] update xhpc to 20250821 to fix strided_copy

Author: cqulilujia

cmake/external/xpu.cmake

@@ -34,7 +34,7 @@ set(XPU_FFT_LIB_NAME "libcufft.so")
 add_compile_definitions(XPUAPI_NOT_INCLUDE_DEPRECATED)
 
 if(NOT DEFINED XPU_XHPC_BASE_DATE)
-  set(XPU_XHPC_BASE_DATE "dev/20250814")
+  set(XPU_XHPC_BASE_DATE "dev/20250821")
 endif()
 set(XPU_XCCL_BASE_VERSION "3.0.3.1") # For XRE5
 if(NOT DEFINED XPU_XFT_BASE_VERSION)