Analyze IDE performance of typed messages integration

[amannn]

Is your feature request related to a problem? Please describe.

next-intl provides opt-in strict typing for messages. After stumbling over https://twitter.com/_philpl/status/1748084361939886437 I'm wondering if there are some parts of it that could see some performance improvements.

Describe the solution you'd like

I haven't noticed performance problems in regard to strict typing, but it would be interesting to see if there's something to improve.

If there can be such dramatic changes to the way TypeScript compiles code, maybe this would make #410 quite eligible.

Describe alternatives you've considered

Leaving the implementation as-is.