WordPress at a glance
function is not described

_restore_wpautop_hook() WP 5.0.0

If do_blocks() needs to remove wp_autop() from the the_content filter, this re-adds it afterwards, for subsequent the_content usage.

No Hooks.

Return

String. The unmodified content.

Usage

_restore_wpautop_hook( $content );
$content(string) (required)
The post content running through this filter.

Code of restore wpautop hook: wp-includes/blocks.php VER 5.1.1

<?php
function _restore_wpautop_hook( $content ) {
	$current_priority = has_filter( 'the_content', '_restore_wpautop_hook' );

	add_filter( 'the_content', 'wpautop', $current_priority - 1 );
	remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority );

	return $content;
}