Livewire Upload loading state
Via https://stackoverflow.com/questions/67402941/laravel-livewire-refresh-view-before-slow-upload
<form method="POST" wire:submit.prevent="submit">
@csrf
<div class="mb-3">
<x-media-library-attachment name="media" :rules="$mimeTypes" key="mediaLibrary"/>
</div>
<input type="submit" class="btn btn-primary btn-bg" />
</form>
<div wire:loading wire:target="submit">
Loading...
</div>