[V1] Fix CI tests on V1 engine (#10272)

Signed-off-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>

tests/v1/engine/test_engine_core.py

@@ -27,6 +27,9 @@ def make_request() -> EngineCoreRequest:
         request_id=uuid.uuid4(),
         prompt=PROMPT,
         prompt_token_ids=PROMPT_TOKENS,
+        mm_data=None,
+        mm_placeholders=None,
+        mm_processor_kwargs=None,
         sampling_params=SamplingParams(),
         eos_token_id=None,
         arrival_time=time.time(),

tests/v1/engine/test_engine_core_client.py

@@ -29,6 +29,9 @@ def make_request(params: SamplingParams) -> EngineCoreRequest:
         request_id=str(uuid.uuid4()),
         prompt=PROMPT,
         prompt_token_ids=PROMPT_TOKENS,
+        mm_data=None,
+        mm_placeholders=None,
+        mm_processor_kwargs=None,
         sampling_params=params,
         eos_token_id=None,
         arrival_time=time.time(),

vllm/v1/engine/core.py

@@ -317,7 +317,7 @@ class EngineCoreProc(EngineCore):
 
         # Msgpack serialization decoding.
         decoder_add_req = PickleEncoder()
-        decoder_abort_req = msgpack.Decoder(list[str])
+        decoder_abort_req = PickleEncoder()
 
         with self.make_socket(input_path, zmq.constants.PULL) as socket:
             while True: