Help with kotlin-js

Hi @KvanTTT @bashor

I'm experimenting with Kotlin/Wasm and facing an issue you might be able to help with...

I've downloaded kotlinc 2.0.0-Beta3, and `kotlinc-js -version` shows the correct version.

When I run:

`kotlinc-js src/main/kotlin/Test.kt -Xwasm -Xwasm-target=wasm -ir-output-name test.js -ir-output-dir out/wasm -kotlin-home /Users/ericvergnaud/Development/kotlinc`

I get:

`exception: java.lang.IllegalStateException: Class not found: kotlin/Float`

How do I tell kotlin-js where to find builtins (I thought -kotlin-home was about that) ?
Btw where are they actually located ?

Start with src/main/kotlin/Test.kt and reproduce the kotlinc-js command shown in the issue, including -Xwasm and -kotlin-home. Investigate how the Kotlin/Wasm compiler resolves kotlin/Float and where the required builtins are located; done would mean a confirmed cause and documented working configuration or a validated compiler fix.

Written by the indexing model from the issue text.