fix(node/fs): Use correct offset and length in node:fs.read and write

[nathanwhit]

My fix in #25030 was buggy, I forgot to pass the byteOffset and byteLength. Whoops.

I also discovered that fs.read was not respecting the offset argument, and we were constructing a new Buffer for the callback instead of just passing the original one (which is what node does, and the @types/node definitions also indicate the callback should get the same type).
Fixes #25028.

[ry]

a test would be good

[marvinhagemeister]

Changes Look good. Should this have a test?

[littledivy]

LGTM