### What this PR does / why we need it?
1. install trition for test_custom_op
2. tests/e2e/nightly/ops test timeout, set timeout-minutes let it test
over:
https://github.com/vllm-project/vllm-ascend/actions/runs/20326482497/job/58392757707?pr=5112
3. ignore test_dispatch_ffn_combine until it is fixed @kiscad
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
- vLLM version: v0.12.0
- vLLM main:
ad32e3e19c
Signed-off-by: hfadzxy <starmoon_zhang@163.com>