[Misc] Set default value of seed to None (#14274)

Signed-off-by: மனோஜ்குமார் பழனிச்சாமி <smartmanoj42857@gmail.com>

tests/entrypoints/llm/test_encode.py

@@ -34,7 +34,8 @@ def llm():
               max_num_batched_tokens=32768,
               tensor_parallel_size=1,
               gpu_memory_utilization=0.75,
-              enforce_eager=True)
+              enforce_eager=True,
+              seed=0)
 
     with llm.deprecate_legacy_api():
         yield weakref.proxy(llm)