add titan

Author: lowdy1

.github/workflows/ascend_npu_test.yml

@@ -184,7 +184,7 @@ jobs:
     uses: ./.github/workflows/_ascend_npu_torchtitan.yml
     with:
       runner: "linux-arm64-npu-2"
-      image: ${{ needs.prepare.outputs.image }}
+      image: "ascendai/cann:8.0.0.beta1-910b-ubuntu22.04-py3.10"
       device:  ${{ needs.prepare.outputs.device }}
       torch-artifact: ${{ needs.build-torch.outputs.torch-artifact }}
       torch-npu-artifact: ${{ needs.build.outputs.torch-npu-artifact }}