Retrieves path of tag template in current or parent template.

The hierarchy for this template looks like:

1. tag-{slug}.php
2. tag-{id}.php
3. tag.php

An example of this is:

1. tag-wordpress.php
2. tag-3.php
3. tag.php

The template hierarchy and template path are filterable via the {@see ‘$type_template_hierarchy’}
and {@see ‘$type_template’} dynamic hooks, where `$type` is ‘tag’.

function get_tag_template() {
	$tag = get_queried_object();

	$templates = array();

	if ( ! empty( $tag->slug ) ) {

		$slug_decoded = urldecode( $tag->slug );
		if ( $slug_decoded !== $tag->slug ) {
			$templates[] = "tag-{$slug_decoded}.php";
		}

		$templates[] = "tag-{$tag->slug}.php";
		$templates[] = "tag-{$tag->term_id}.php";
	}
	$templates[] = 'tag.php';

	return get_query_template( 'tag', $templates );
}