request lost content-length header and so on when post formData lead to server error

[AisonSu]

Bug Description

when i use request to post formdata, server report error 412,but use fetch with same config it will work normally

Reproducible By

Use request and fetch post formdata to same address

Expected Behavior

request should entirely have same headers which fetch have i think

Logs & Screenshots

Environment

Win11 22621.1413
Node v18.12.1

Additional context

short of content-length and so on