Nonsense UNKNOWN error when writing large buffers with fs.writev

### Version 14.18.1 ### Platform Linux ops 5.11.0-1021-gcp #23~20.04.1-Ubuntu SMP Fri Oct 1 19:04:32 UTC 2021 x86_64 x86_64 x86_64 GNU/Linu ### Subsystem fs ### What steps will reproduce the bug? ```js const fs = require("fs"); const fd = fs.openSync("./test.dat", fs.constants.O_WRONLY | fs.constants.O_CREAT, 0o666); const bufs = [Buffer.alloc(0x7FFFFFFF + 1)]; fs.writevSync(fd, bufs, 0); ``` This throws ``` Uncaught Error: UNKNOWN: unknown error, write at Object.writevSync (fs.js:749:3) { errno: -2147483648, syscall: 'write', code: 'UNKNOWN' } ``` That errno is 0x7fffffff + 1 wrapped around. ### How often does it reproduce? Is there a required condition? Always. ### What is the expected behavior? Should either work, since pwritev(2) works (I don't know if it has a limit less than `SSIZE_MAX`), or report a proper error before making the syscall. I did the latter recently for `fs.write` in c4e7dca8f30ff89b42e96fb8819558ed518a72dd. It would be nice if large files actually worked, but the best fix for that would require a new libuv function. ### What do you see instead? _No response_ ### Additional information _No response_