[Quickfix] update CachedRequestState as NewRequestData changed (#2367)

### What this PR does / why we need it?
1. update `CachedRequestState` as `NewRequestData` changed in
https://github.com/vllm-project/vllm/pull/22570
2. drop maintenance of vllm v0.10.0 in the branch main

### Does this PR introduce _any_ user-facing change?
N/A

### How was this patch tested?
CI passed with existing test.


- vLLM version: v0.10.0
- vLLM main:
92ff41abea

---------

Signed-off-by: MengqingCao <cmq0113@163.com>

vllm_ascend/multistream/ms_split.py

@@ -105,7 +105,7 @@ def model_input_split_v1_mla_attn(
     [block_table_pre,
      block_table_post] = split_attn_tensor_type(attn_metadata.block_tables,
                                                 seq_index)
-
+    assert attn_metadata.attn_mask is not None
     if attn_metadata.attn_state == AscendAttentionState.PrefillNoCache or attn_metadata.attn_state == AscendAttentionState.PrefillCacheHit:
         # the attn_mla kernel in torch npu only accept 128*128 attn mask
         attn_mask_pre = attn_mask_post = attn_metadata.attn_mask