[Fix] Unify pinned host pool release on graceful shutdown (#32029)

python/sglang/srt/managers/scheduler.py

@@ -1465,11 +1465,9 @@ class Scheduler(
         # HostKVCache.destroy. Called from run_scheduler_process's finally.
         if self.hisparse_coordinator is not None:
             self.hisparse_coordinator.destroy()
-        # A plain HiRadixCache (no hisparse) also holds a large pinned host KV
-        # pool; unregister it here too, else the kernel unpins it during reclaim.
-        host_pool = getattr(self.tree_cache, "token_to_kv_pool_host", None)
-        if host_pool is not None:
-            host_pool.destroy()
+        self.tree_cache.release_host_resources()
+        if self.decode_offload_manager is not None:
+            self.decode_offload_manager.release_host_resources()
 
     def run_event_loop(self) -> None:
         """Run the scheduler's event loop.