Suppress experimental warnings with Node v18

[tmont]

$ cat test.js
console.log('hello world');

$ node_modules/.bin/node-dev test.js
(node:2550900) ExperimentalWarning: Custom ESM Loaders is an experimental feature. This feature could change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
hello world

I saw that file conveniently called suppress-experimental-warnings.js but either it doesn't work or it doesn't work with Node v18.

It looks like something internal changed at some point in the way warnings are emitted according to this comment: nodejs/node#30810 (comment)

[MoKhajavi75]

any updates?

cc @fgnass