Merge branch 'trunk' into remove/wave-effect

Author: pfefferle

.github/changelog/1719-from-description

@@ -0,0 +1,4 @@
+Significance: patch
+Type: changed
+
+Default avatar and error handling for the reactions popover list.

build/reactions/index.asset.php

@@ -1 +1 @@
-<?php return array('dependencies' => array('react', 'wp-api-fetch', 'wp-block-editor', 'wp-blocks', 'wp-components', 'wp-element', 'wp-i18n'), 'version' => 'a0e40932b0557fb23c69');
+<?php return array('dependencies' => array('react', 'wp-api-fetch', 'wp-block-editor', 'wp-blocks', 'wp-components', 'wp-element', 'wp-i18n'), 'version' => '861b76cedf6b7abcf57e');

build/reactions/index.js

@@ -1 +1 @@
-<?php return array('dependencies' => array('react', 'wp-api-fetch', 'wp-components', 'wp-dom-ready', 'wp-element', 'wp-i18n'), 'version' => '5c34ce64c70cd74680db');
+<?php return array('dependencies' => array('react', 'wp-api-fetch', 'wp-components', 'wp-dom-ready', 'wp-element', 'wp-i18n'), 'version' => '623ed543024a3381b6d6');