vector dimension cannot exceed 1536

**例行检查**

[//]: # '方框内填 x 表示打钩'

- [ x] 我已确认目前没有类似 issue
- [ x] 我已完整查看过项目 README，以及[项目文档](https://doc.fastgpt.io/docs/introduction/)
- [ x] 我使用了自己的 key，并确认我的 key 是可正常使用的
- [ x] 我理解并愿意跟进此 issue，协助测试和提供反馈
- [x] 我理解并认可上述内容，并理解项目维护者精力有限，**不遵循规则的 issue 可能会被无视或直接关闭**

**你的版本**

- [ ] 公有云版本
- [x] 私有部署版本, 具体版本号:
私有部署：fastgpt/fastgpt:v4.14.5
**问题描述, 日志截图，配置文件等**
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
怎么解除限制
**复现步骤**
使用Qwen3-Embedding-8B
**预期结果**
不应当截断
**相关截图**
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured
The current vector dimension is 4096, and the vector dimension cannot exceed 1536. The first 1536 dimensions are automa
tically captured