[FEAT] Ensure xxhash compatibility by checking for xxh3_128_digest attribute

Signed-off-by: LuminolT <[email protected]>

Author: LuminolT

vllm/utils/hashing.py

@@ -10,7 +10,9 @@
 
 import cbor2
 try:
-    import xxhash as _xxhash
+    import xxhash as _xxhash  
+    if not hasattr(_xxhash, "xxh3_128_digest"):  
+        _xxhash = None  
 except ImportError:  # pragma: no cover
     _xxhash = None