test: deflake test-tls-close-notify.js

This test occasionally fails on macOS with the following error

```
events.js:187
      throw er; // Unhandled 'error' event
      ^

Error: read ECONNRESET
    at TLSWrap.onStreamRead (internal/stream_base_commons.js:201:27)
Emitted 'error' event on TLSSocket instance at:
    at emitErrorNT (internal/streams/destroy.js:84:8)
    at processTicksAndRejections (internal/process/task_queues.js:80:21) {
  errno: -54,
  code: 'ECONNRESET',
  syscall: 'read'
}
```

Fix it by making the client send the close_notify alert instead of the
server.

PR-URL: https://github.com/nodejs/node/pull/30202


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>