OPENAI_EMBEDDING_REQUEST_DIMS在当前main中已失效，.env示例中还在。

vllm启动的bge-m3不接收dimensions参数，导致coze配置后报错
code=105000004 message=SearchStore operation failed: store search store failed, err: [slices2Columns] embed failed, error, status code: 400, status: 400 Bad Request, message: %!s(), body: {"object":"error","message":"dimensions is currently not supported","type":"BadRequestError","param":null,"code":400}
检查env文件OPENAI_EMBEDDING_REQUEST_DIMS置空可不发送，经测试无效，检查最新的main代码，该配置未被使用。目前好像无法发送不带这个参数的请求。
正尝试测试release的版本

Start by tracing OPENAI_EMBEDDING_REQUEST_DIMS through the current main embedding-request path; the issue reports that leaving it empty still sends dimensions to vLLM when running bge-m3. Reproduce the request with that configuration and compare it with the release version. Done means an empty setting omits dimensions and the embedding request no longer receives the reported 400 error.

Written by the indexing model from the issue text.