[BUG] When pulling historical messages, the paged data falls into an infinite loop

### OpenIM SDK Version

3.8.3-2

### OpenIM Server Version

3.8.2

### SDK Platform

iOS SDK

### Device Model

iOS

### Operating System Version

iOS

### Bug Description and Steps to Reproduce

拉历史消息的时候,分页数据陷入了无限循环

### Screenshots Link

拉历史消息的时候,分页数据陷入了无限循环