Fix Instagram embeds with Jetpack shortcodes module

plugin.php

<?php

// Disable Jetpack's instagram shortcode since it breaks oEmbed functionality.
add_filter( 'jetpack_shortcodes_to_include', function ( $shortcodes ) {
	unset( $shortcodes['instagram'] );

	return $shortcodes;
}, 99 );

// Add a simple shortcode wrapper for the embed functionality to support the shortcode format.
add_shortcode( 'instagram', function ( $atts ) {
	global $wp_embed;
	if ( empty( $atts['url'] ) ) {
		return '';
	}
	return $wp_embed->shortcode( $atts, $atts['url'] );
} );

This is a quick workaround for this Jetpack bug which breaks the Instagram block in WordPress. Automattic/jetpack#9331