i just want to support this request, because i keep running into it when pasting text more than about 30 lines
But there is a workaround:
- send the request without the long file content attached
- click on edit
- paste the content in the edit view
it will add it and not create a file attachment no matter how long the content is
but this workaround is annoying to do and probably not how it was intended to be used / creating extra calls to the llms api that are not needed.