Do not touch /pool/stats from stats aggregation if PG recheck is active

mon/mon.js

@@ -773,6 +773,9 @@ class Mon
                 }
             }
         }
+        if (!this.recheck_pgs_active)
+        {
+            // PG recheck also modifies /pool/stats, so don't touch it here if it's active
             for (const pool_id in this.state.pool.stats)
             {
                 if (!seen_pools[pool_id])
@@ -792,6 +795,7 @@ class Mon
                     } });
                 }
             }
+        }
         if (txn.length)
         {
             await this.etcd.etcd_call('/kv/txn', { success: txn }, this.config.etcd_mon_timeout, 0);