有没有可能出现两次选举成功的间隔小于election_timeout导致lease read失效？

如下case：

三节点{A, B, C}

```
1. A向BC请求投票
2. BC都成功给A投票
3. B选举超时，开始preVote
4. A当选为Leader （Term=1），之后开始向BC发送心跳
5. B向AC请求投票
6. C成给B投票
7. B当选为Leader（Term=2）
```

follower在handleRequestVoteRequest中vote成功时，并没有renew follower_lease。这种情况下follower(B)在vote成功后会立即开始新的一轮选举，导致AB两个node在很短时间内先后当选为Leader

会有这种情况发生吗？

Start by reading handleRequestVoteRequest and the follower_lease and election_timeout handling. Reproduce the described three-node sequence and determine whether two leaders can be elected within one election timeout and whether lease reads then become invalid; the issue is done when this behavior is confirmed or ruled out.

Written by the indexing model from the issue text.