Editor: Add changes for new Comments Query Loop blocks

Backports changes from Gutenberg to add functions required by Comment Query Loop and related blocks. Related unit tests depends on the new blocks and they will get added seperately.

Props darerodz, timothyblynjacobs.
See #55505.


Built from https://develop.svn.wordpress.org/trunk@53138


git-svn-id: http://core.svn.wordpress.org/trunk@52727 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/block-editor.php

@@ -396,6 +396,23 @@ function get_block_editor_settings( array $custom_settings, $block_editor_contex
 
 	$editor_settings['localAutosaveInterval'] = 15;
 
+	$editor_settings['__experimentalDiscussionSettings'] = array(
+		'commentOrder'        => get_option( 'comment_order' ),
+		'commentsPerPage'     => get_option( 'comments_per_page' ),
+		'defaultCommentsPage' => get_option( 'default_comments_page' ),
+		'pageComments'        => get_option( 'page_comments' ),
+		'threadComments'      => get_option( 'thread_comments' ),
+		'threadCommentsDepth' => get_option( 'thread_comments_depth' ),
+		'avatarURL'           => get_avatar_url(
+			'',
+			array(
+				'size'          => 96,
+				'force_default' => true,
+				'default'       => get_option( 'avatar_default' ),
+			)
+		),
+	);
+
 	/**
 	 * Filters the settings to pass to the block editor for all editor type.
 	 *