Can we add a fulltext search facet for the asset finder in AEM 6.3? For example: By declaring one at /conf/global/settings/cq/search/facets/images/jcr:content/items/fulltext.
For assets, we can't declare our own custom fulltext search facet. By design, we can have only one fulltext search facet which is already declared on the assets.html page. So, we can't declare another one.