[New model] Qwen3-next support (#2917)

### What this PR does / why we need it?
Add Qwen3-next support.

### Does this PR introduce _any_ user-facing change?
Yes, users can use Qwen3 next.
Related doc: https://github.com/vllm-project/vllm-ascend/pull/2916 the
tutorial will be ready in
[here](https://vllm-ascend.readthedocs.io/en/latest/tutorials/multi_npu_qwen3_next.html)

### How was this patch tested?
Doc CI passed

Related: https://github.com/vllm-project/vllm-ascend/issues/2884

Co-Authored-By: Angazenn <supperccell@163.com>
Co-Authored-By: zzzzwwjj <1183291235@qq.com>
Co-Authored-By: MengqingCao <cmq0113@163.com>
Co-Authored-By: linfeng-yuan <1102311262@qq.com>
Co-Authored-By: hust17yixuan <303660421@qq.com>
Co-Authored-By: SunnyLee219 <3294305115@qq.com>
Co-Authored-By: maoxx241 <maoxx241@umn.edu>


- vLLM version: v0.10.2
- vLLM main:
b834b4cbf1

---------

Signed-off-by: MengqingCao <cmq0113@163.com>
Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>
Signed-off-by: Angazenn <supperccell@163.com>
Signed-off-by: Your Name <you@example.com>
Signed-off-by: zzzzwwjj <1183291235@qq.com>
Signed-off-by: linfeng-yuan <1102311262@qq.com>
Signed-off-by: hust17yixuan <303660421@qq.com>
Co-authored-by: MengqingCao <cmq0113@163.com>
Co-authored-by: Angazenn <supperccell@163.com>
Co-authored-by: Your Name <you@example.com>
Co-authored-by: zzzzwwjj <1183291235@qq.com>
Co-authored-by: linfeng-yuan <1102311262@qq.com>
Co-authored-by: hust17yixuan <303660421@qq.com>

vllm_ascend/spec_decode/eagle_proposer.py

@@ -350,7 +350,8 @@ class EagleProposer(Proposer):
                 spec_attn_mask=self.runner.spec_attn_mask,
                 attn_state=self.runner.attn_state,
                 decode_token_per_req=self.runner.decode_token_per_req,
-            )
+                num_computed_tokens_cpu=None,
+                seq_lens=None)
             attn_metadata_i = self.runner.attn_metadata_builder.build(
                 common_attn_metadata, self.runner.get_model())
             for layer_name in kv_cache_group_spec.layer_names:
@@ -436,7 +437,8 @@ class EagleProposer(Proposer):
             spec_attn_mask=self.runner.spec_attn_mask,
             attn_state=self.runner.attn_state,
             decode_token_per_req=self.runner.decode_token_per_req,
-        )
+            num_computed_tokens_cpu=None,
+            seq_lens=None)
         # FIXME(woosuk): The below two ops cause synchronization. Optimize.
         attn_metadata = self.runner.attn_metadata_builder.build(
             common_attn_metadata, self.runner.model)