chore: bump sglang-kernel version to 0.4.1.post1 (#23733)

Co-authored-by: sglang-bot <sglang-bot@users.noreply.github.com>
Co-authored-by: Kangyan Zhou <zky314343421@gmail.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

test/registered/4-gpu-models/test_qwen35_hicache.py

@@ -1,8 +1,3 @@
-"""
-# TODO: Fails on cu13 venv migration. Ref: https://github.com/sgl-project/sglang/actions/runs/24616960626/job/71980705674?pr=23119
-# Should move back to registered test after it's fixed
-"""
-
 import shutil
 import tempfile
 import unittest

test/registered/hicache/test_hicache_storage.py

@@ -3,11 +3,6 @@ from sglang.test.ci.ci_register import register_amd_ci, register_cuda_ci
 register_cuda_ci(est_time=99, suite="stage-b-test-1-gpu-small")
 register_amd_ci(est_time=300, suite="stage-b-test-1-gpu-small-amd")
 
-"""
-# TODO: Segmentation fault occurs when upgraded to Cu13. Ref: https://github.com/sgl-project/sglang/actions/runs/24603159715/job/71945537414?pr=23119")
-# Should move back to registered test after it's fixed
-"""
-
 import time
 import unittest
 

test/registered/hicache/test_hicache_storage_3fs_backend.py

@@ -2,8 +2,6 @@
 Benchmark tests for HiCache Storage with 3FS backend.
 Usage:
     python3 -m pytest test/registered/hicache/test_hicache_storage_3fs_backend.py -v
-# TODO: Segmentation fault occurs when upgraded to Cu13. Ref: https://github.com/sgl-project/sglang/actions/runs/24603159715/job/71945537414?pr=23119")
-# Should move back to registered test after it's fixed
 """
 
 import json

test/registered/hicache/test_hicache_storage_file_backend.py

@@ -2,8 +2,6 @@
 E2E tests for HiCache Storage functionality.
 Usage:
     python3 -m pytest test/registered/hicache/test_hicache_storage_file_backend.py -v
-# TODO: Segmentation fault occurs when upgraded to Cu13. Ref: https://github.com/sgl-project/sglang/actions/runs/24603159715/job/71945537414?pr=23119")
-# Should move back to registered test after it's fixed
 """
 
 import json

test/registered/hicache/test_hicache_storage_mooncake_backend.py

@@ -4,9 +4,6 @@ Usage:
     python3.10 -m pytest test/registered/hicache/test_hicache_storage_mooncake_backend.py -v
 """
 
-# TODO: Segmentation fault occurs when upgraded to Cu13. Ref: https://github.com/sgl-project/sglang/actions/runs/24601791606/job/71942123195?pr=23119")
-# Should move back to registered test after it's fixed
-
 import os
 import subprocess
 import time
@@ -15,6 +12,7 @@ import unittest
 import requests
 from test_hicache_storage_file_backend import HiCacheStorageBaseMixin
 
+from sglang.test.ci.ci_register import register_cuda_ci
 from sglang.test.test_utils import (
     DEFAULT_MLA_MODEL_NAME_FOR_TEST,
     CustomTestCase,
@@ -22,6 +20,8 @@ from sglang.test.test_utils import (
     is_in_ci,
 )
 
+register_cuda_ci(est_time=236, suite="stage-b-test-2-gpu-large")
+
 
 class HiCacheStorageMooncakeBackendBaseMixin(HiCacheStorageBaseMixin):
     """Base mixin class with common setup and utilities"""

test/registered/hicache/test_hicache_storage_runtime_attach_detach.py

@@ -7,8 +7,6 @@ HTTP endpoints.
 
 Usage:
     python3 -m pytest test/registered/hicache/test_hicache_storage_runtime_attach_detach.py -v
-# TODO: Segmentation fault occurs when upgraded to Cu13. Ref: https://github.com/sgl-project/sglang/actions/runs/24603159715/job/71945537414?pr=23119")
-# Should move back to registered test after it's fixed
 """
 
 import json

test/registered/hicache/test_hicache_variants.py

@@ -5,8 +5,6 @@ register_amd_ci(est_time=524, suite="stage-b-test-1-gpu-small-amd")
 """
 Consolidated HiCache variant tests.
 Tests HiCache with different configurations: standard, MLA, EAGLE, and page size variants.
-# TODO: Segmentation fault occurs when upgraded to Cu13. Ref: https://github.com/sgl-project/sglang/actions/runs/24603159715/job/71945537414?pr=23119")
-# Should move back to registered test after it's fixed
 """
 
 import unittest