### What this PR does / why we need it?
- Fix the bug https://github.com/vllm-project/vllm-ascend/issues/2978
- Enable e2e test,
- Adapt to scenarios where Speculative tokens are greater than 2,
- Fix the bug that causes Eagle3 inference failures under high
concurrency and improve the acceptance rate of draft models, by
https://github.com/vllm-project/vllm-ascend/pull/2794
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
CI passed with new added/existing test.
Co-authored-by: hukongyi
[hukongyi@cmbchina.com](mailto:hukongyi@cmbchina.com)
Co-authored-by: guanyuzhu
[zhuguanyu@huawei.com](mailto:zhuguanyu@huawei.com)
Co-authored-by: liumail680
[liumail680@163.com](mailto:liumail680@163.com)
- vLLM version: v0.10.2
- vLLM main:
f225ea7dd9
---------
Signed-off-by: Icey <1790571317@qq.com>