fix(cutile): validate the imported tile module

Author: OutisLi

deepmd/pt_expt/kernels/cutile/common.py

@@ -76,7 +76,7 @@
 try:
     from cuda import tile as _cuda_tile
 
-    CUTILE_AVAILABLE = True
+    CUTILE_AVAILABLE = hasattr(_cuda_tile, "kernel")
     del _cuda_tile
 except ImportError:  # pragma: no cover - exercised only without cuda.tile
     CUTILE_AVAILABLE = False