### What this PR does / why we need it?
Change AI Vector core number getting function to glibc ABI free
function. After this PR merged in, there should been no glibc ABI
problems for bump torch version to 2.7.1.
### Does this PR introduce _any_ user-facing change?
No
- vLLM version: v0.9.2
- vLLM main:
f59ec35b7f
Signed-off-by: leo-pony <nengjunma@outlook.com>