main add ascend scheduler support multimodal (#2844)

### What this PR does / why we need it?
On main, AscendScheduler does not support Multimodels, becuse of lacking
of scheduled_encoder_inputs which is need on multimodels inference

### Does this PR introduce _any_ user-facing change?

No

### How was this patch tested?
vLLM version: main@93e28e6862669e3b5cf47cea9f782a65ec47e155

- vLLM version: v0.10.2rc2
- vLLM main:
15b8fef453

---------

Signed-off-by: fan2956 <zhoufan53@huawei.com>
Co-authored-by: zhoufan2956 <zhoufan2956@163.com>

vllm_ascend/core/schedule_config.py

@@ -71,9 +71,6 @@ class AscendSchedulerConfig(SchedulerConfig):
             raise NotImplementedError(
                 f"currently AscendScheduler only supports fcfs policy, got {self.policy}"
             )
-        if self.is_multimodal_model:
-            raise NotImplementedError(
-                "currently AscendScheduler only supports LLM models.")
         if self.send_delta_data:
             raise NotImplementedError(
                 "currently AscendScheduler doesn't support send_delta_data.")