Perf: set timeout of some steps in KG. (#8873)

### What problem does this PR solve?

### Type of change


- [x] Performance Improvement

rag/svr/task_executor.py

@@ -506,7 +506,7 @@ async def run_raptor(row, chat_mdl, embd_mdl, vector_size, callback=None):
     return res, tk_count
 
 
-@timeout(60*60*1.5)
+@timeout(60*60, 1)
 async def do_handle_task(task):
     task_id = task["id"]
     task_from_page = task["from_page"]