However you can override it with a component to remove the extra default like button.
Add this to Common / Header
<script type="text/discourse-plugin" version="0.8">
api.removePostMenuButton("like");
</script>
And if you want to enable the reaction buttons on upvotes topics you can add this to Common / CSS
.qa-topic,
.qa-topic-sort-by-activity {
.discourse-reactions-actions {
display: inline-flex;
}
}