test: fix flaky test-repl

The timeout is insufficient in CI (failures on Raspberry Pi) and I can
reproduce locally (on macOS) with
`tools/test.py -j 96 --repeat 192 test-repl`.

Increase timeout drastically as it only is useful in an error
condition.

PR-URL: #36415
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Trott

test/parallel/test-repl.js

@@ -926,7 +926,7 @@ function event(ee, expected) {
       const data = inspect(expected, { compact: false });
       const msg = `The REPL did not reply as expected for:\n\n${data}`;
       reject(new Error(msg));
-    }, common.platformTimeout(1000));
+    }, common.platformTimeout(9999));
     ee.once('data', common.mustCall((...args) => {
       clearTimeout(timeout);
       resolve(...args);