[V1] VLM - Run the mm_mapper preprocessor in the frontend process (#10640)

Signed-off-by: Roger Wang <ywang@roblox.com>
Co-authored-by: Michael Goin <michael@neuralmagic.com>
Co-authored-by: Roger Wang <ywang@roblox.com>

tests/v1/engine/test_engine_core.py

@@ -27,9 +27,8 @@ def make_request() -> EngineCoreRequest:
         request_id=uuid.uuid4(),
         prompt=PROMPT,
         prompt_token_ids=PROMPT_TOKENS,
-        mm_data=None,
+        mm_inputs=None,
         mm_placeholders=None,
-        mm_processor_kwargs=None,
         sampling_params=SamplingParams(),
         eos_token_id=None,
         arrival_time=time.time(),