Fix `yarn dev-ee` with new CLJS setup (#34319)

`yarn dev` had been adjusted to use `build-hot:js-wait` (which waits for the first CLJS compilation to be done), but `yarn dev-ee` had not been changed, so its JS compilation ran too early, failed, and never re-ran.

We actually had this broken behavior (JS build runs too early, CLJS build completes, JS build fails, JS build notices new inputs and re-runs) for a long time. But since it fixed itself when the JS build re-ran, it didn't cause any issues. Now that the JS build no longer watches the CLJS output for changes, the CLJS output needs to be there for the first JS build.