build: wire CCCL preload into competition pipeline

computility-run.yaml:
  PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True
  LD_PRELOAD=/workspace/qwen3_6_scripts/cccl_preload/libcccl_allocator.so

patch_ops.sh:
  调用 cccl_preload/build_cccl_preload.sh 编译 .so

真机验证: ALL TESTS PASSED on BI-V100 32GB

computility-run.yaml

@@ -48,8 +48,6 @@ env:
     - name: BI100_MOE_COREX_TOPK_SOFTMAX
       value: '1'
     - name: PYTORCH_CUDA_ALLOC_CONF
-      value: max_split_size_mb:512
+      value: expandable_segments:True
     - name: LD_PRELOAD
-      value: /workspace/qwen3_6_scripts/libcccl_allocator.so
-    - name: CCCL_ALLOC_DISABLE
-      value: '0'
+      value: /workspace/qwen3_6_scripts/cccl_preload/libcccl_allocator.so