Bug Description

Fiber doesnt send 413 response to firefox, however under chrome or safari it does.

Firefox inspector - v104.0.2

Chrome inspector

How to Reproduce

Steps to reproduce the behavior:

1. create post endpoint as per code below
2. use firefox to upload file > 5MB

Firefox returns

The connection was reset
The connection to the server was reset while the page was loading.

Expected Behavior

To return 413 response. Without this cant use custom error handler.

Fiber Version

Fiber v2.37.1

Code Snippet (optional)

func PostUpload(c *fiber.Ctx) error {
	file, err := c.FormFile("attachment")
	if err != nil {
		log.Println(err)
	}
	log.Println(file.Filename)
	log.Println(file.Size)

	return nil
}

Checklist:

• I agree to follow Fiber's Code of Conduct.
• I have checked for existing issues that describe my problem prior to opening this one.
• I understand that improperly formatted bug reports may be closed without explanation.