[Bug] 去对话输入发送会有截断

### Contact Information

3346947459@qq.com

### MaxKB Version

2.10.6

### Problem Description

去对话输入发送会有截断

### Steps to Reproduce

<img width="3300" height="1263" alt="Image" src="https://github.com/user-attachments/assets/253b7d36-b3ec-4e16-b704-0afdeff318db" />

### The expected correct result

_No response_

### Related log output

```shell

```

### Additional Information

_No response_