[HiSparse][BugFix]: Fix the memory leak issue during health checks. (#22882)

python/sglang/srt/managers/scheduler_output_processor_mixin.py

@@ -89,6 +89,8 @@ class SchedulerOutputProcessorMixin:
             req.check_finished()
             if req.finished():
                 req.time_stats.set_quick_finish_time()
+                if self.enable_hisparse:
+                    self.hisparse_coordinator.request_finished(req)
                 release_kv_cache(req, self.tree_cache)
 
         # Note: Logprobs should be handled on the prefill engine.