### What this PR does / why we need it?
This PR adds a case of qwen3-30b w8a8 with mooncake mempool, we need to
test it regual
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
by running the test
- vLLM version: v0.14.1
- vLLM main:
d68209402d
Signed-off-by: jiangyunfan1 <jiangyunfan1@h-partners.com>