chore: update CI test est_time values (#22565)

Co-authored-by: Cheng Wan <chwan@rice.edu>
Co-authored-by: sglang-bot <sglang-bot@users.noreply.github.com>
Co-authored-by: Cheng Wan <54331508+ch-wan@users.noreply.github.com>

test/registered/disaggregation/test_disaggregation_basic.py

@@ -20,7 +20,7 @@ from sglang.test.test_utils import (
     DEFAULT_TARGET_MODEL_EAGLE3,
 )
 
-register_cuda_ci(est_time=400, suite="stage-b-test-2-gpu-large")
+register_cuda_ci(est_time=394, suite="stage-b-test-2-gpu-large")
 
 
 class TestDisaggregationAccuracy(PDDisaggregationServerBase):