[Refactor]: clean up diffusion scheduler interfaces (#5216)

Signed-off-by: Huang, Zeyu <11222265+fhfuih@users.noreply.github.com>
Signed-off-by: Zeyu Huang | 黃澤宇 <11222265+fhfuih@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

vllm_omni/diffusion/executor/multiproc_executor.py

@@ -329,7 +329,7 @@ class MultiprocDiffusionExecutor(DiffusionExecutor):
             try:
                 result = self.collective_rpc(
                     "execute_model",
-                    args=(req, self.od_config, scheduler_output.kv_prefetch_jobs),
+                    args=(req, self.od_config, scheduler_output.kv_prefetch_job),
                     unique_reply_rank=0,
                     exec_all_ranks=True,
                 )