Hide child terms for specific taxonomy when using Search and Filtering (requires 1.1.29 or newer)

functions.php

<?php

add_filter( 'search_and_filtering_get_taxonomy_data_options_include_child_terms', 'smyles_tax_child_terms', 10, 2 );

function smyles_tax_child_terms( $args, $taxonomy ){
	
	if( $taxonomy === 'job_listing_category' ){
		return false;
	}
	
	return $args;
}