The `DiscourseLocation.initState` function was accidently renamed in 0431942f (select-kit-2) to `initOptions`. This means that the ember router does not automatically call the function after the router is initialized.
For a long time, we have been calling the `initState` function in the `init` function of discourse-location, which caused an imperceptible URL change to the the root domain, before switching back to the correct subfolder URL when ember called `initState`. This commit removes that call from the initializer, so `initState` is only called once (by ember).
Relevant ember code: https://github.com/emberjs/ember.js/blob/v3.12.2/packages/@ember/-internals/routing/lib/system/router.ts#L695-L699
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