refactor: consolidate is_in_ci (jit_kernel, sgl-kernel benchmarks, tests) (#21009)

sgl-kernel/benchmark/bench_moe_topk_softmax.py

@@ -6,6 +6,8 @@ import torch
 import triton
 from sgl_kernel import topk_softmax
 
+from sglang.utils import is_in_ci
+
 # Optional vLLM import
 try:
     from vllm import _custom_ops as vllm_custom_ops
@@ -15,11 +17,7 @@ except ImportError:
     vllm_custom_ops = None
     VLLM_AVAILABLE = False
 
-# CI environment detection
-IS_CI = (
-    os.getenv("CI", "false").lower() == "true"
-    or os.getenv("GITHUB_ACTIONS", "false").lower() == "true"
-)
+IS_CI = is_in_ci()
 
 
 def vllm_topk_softmax(gating_output, topk):