[Kernel] Deprecate DeepGemm in sgl kernel and apply custom wheel sgl-deep-gemm (#24268)

scripts/ci/cuda/ci_install_dependency.sh

@@ -294,6 +294,12 @@ install_sglang_kernel() {
     else
         echo "CUSTOM_BUILD_SGL_KERNEL=true: keeping freshly built sgl-kernel wheel."
     fi
+    SGL_DEEP_GEMM_VERSION=$(grep -Po -m1 '(?<=sgl-deep-gemm==)[0-9A-Za-z\.\-]+' python/pyproject.toml)
+    if [ "$CU_MAJOR" = "13" ]; then
+        $PIP_CMD install "sgl-deep-gemm==${SGL_DEEP_GEMM_VERSION}" --force-reinstall $PIP_INSTALL_SUFFIX
+    else
+        $PIP_CMD install "https://github.com/sgl-project/whl/releases/download/v${SGL_DEEP_GEMM_VERSION}/sgl_deep_gemm-${SGL_DEEP_GEMM_VERSION}+cu129-py3-none-manylinux2014_$(uname -m).whl" --force-reinstall $PIP_INSTALL_SUFFIX
+    fi
 
     mark_step_done "${FUNCNAME[0]}"
 }