fix: flush base buffer at startup

trie/triedb/pathdb/nodebufferlist.go

@@ -128,11 +128,18 @@ func newNodeBufferList(
 		waitForceKeepCh: make(chan struct{}),
 		keepFunc:        keepFunc,
 	}
+
+	if nf.base.size > nf.base.limit {
+		// buffer base is loaded from disk layer journal which maybe bigger than limit,
+		// flush base at startup if it is bigger than limit.
+		nf.backgroundFlush()
+	}
+
 	go nf.loop()
 
 	log.Info("new node buffer list", "proposed block interval", nf.wpBlocks,
 		"reserve multi difflayers", nf.rsevMdNum, "difflayers in multidifflayer", nf.dlInMd,
-		"limit", common.StorageSize(limit), "layers", layers, "persist id", nf.persistID)
+		"limit", common.StorageSize(limit), "layers", layers, "persist id", nf.persistID, "base_size", size)
 	return nf
 }