Reactions: Hide title more comprehensively (#1709)

Author: obenland

.github/changelog/1709-from-description

@@ -0,0 +1,4 @@
+Significance: patch
+Type: changed
+
+Titles added through a Heading block in the Reactions block now stay properly hidden when there are no reactions.

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' => '3a159dbba14b00d4163c');
+<?php return array('dependencies' => array('react', 'wp-api-fetch', 'wp-block-editor', 'wp-blocks', 'wp-components', 'wp-element', 'wp-i18n'), 'version' => '49eb4f69734089479cfd');

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' => '2f19592adb33b4030d68');
+<?php return array('dependencies' => array('react', 'wp-api-fetch', 'wp-components', 'wp-dom-ready', 'wp-element', 'wp-i18n'), 'version' => '55dea90f19d1cfa3aa15');