307 & 308 redirect should preserve body per RFC

[winewine]

got starting from version 15 started dropping request body when followRedirect: true

The comment is wrong in the source code

got/source/core/index.ts

Lines 1088 to 1089 in e5e645a

	// 301/302 POST already drops the body (converted to GET above).
	// 307/308 preserve the method per RFC, but the body must not be

and the shouldDropBody flag

got/source/core/index.ts

Line 1093 in e5e645a

this._stripCrossOriginState(updatedOptions, redirectUrl, shouldDropBody);

should be false when http status code is 307 or 308

https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/307
https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/308

all other major http clients (including ky) I have tested retains the body on POST method when encountering 308 redirect.