### What this PR does / why we need it?
[CI] Recover pd disaggregated encoder test case that been incorrectly
skipped in PR: https://github.com/vllm-project/vllm-ascend/pull/7412
### Does this PR introduce _any_ user-facing change?
NA
### How was this patch tested?
NA
- vLLM version: v0.17.0
- vLLM main:
8b6325758c
Signed-off-by: leo-pony <nengjunma@outlook.com>