Turbopack: Don't replace constant conditions with sideeffects (#72608)
Closes PACK-3368
Closes #72180
Previously,
```js
if (sideEffectFalse((state += 1))) {
return
}
```
was replaced with
```js
if ("TURBOPACK compile-time falsy", 0) {
return
}
```
which discards the side effects of both the arguments, and of the
function itself.