WordPress: filter for the_content to remove excess tags around shortcodes

## wp-filter-shortcode-content.php
// get rid of junk <p> and <br> tags TinyMCE inserts around shortcodes
add_filter( 'the_content', function ( $content ) {
	$array = [
		'<p>[' => '[',
		']</p>' => ']',
		']<br />' => ']',
		']<br>' => ']',
		'<p>&nbsp;</p>' => '',
	];
	$content = strtr( $content, $array );
	return $content;
});