Tracking issue for the deprecation and removal of `-sDETERMINISTIC`

[sbc100]

I'm not sure this setting has any users? However, if it does, it can also be replaced with a simple --pre-js file (essentially the contents of src/deterministic.js).

The process for deprecating and removing features from emscripten is laid out out in https://github.com/emscripten-core/emscripten/blob/main/docs/process.md#deprecating-settings-and-features.

At any point in the process we may decide to delay or abort the deprecation and close this issue.

Deprecation checklist:

• Open an issue (this)
• Perform global search for usage in public repos
• Send message to emscripten-discuss
• Add "deprecation" warning to emcc
• Wait at least 4 releases or 2 months
• Remove feature from codebase

[dschuff]

Maybe it's worth expanding a bit here on what the simple --pre-js file would look like?