feat(creator-studio): bottom status bar, editor-rendered math/footnote, code language picker, block delete

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/creator-studio/build/index.asset.php

@@ -1 +1 @@
-<?php return array('dependencies' => array('react', 'wp-element', 'wp-i18n'), 'version' => 'b411c17006fd7ed53e70');
+<?php return array('dependencies' => array('react', 'wp-element', 'wp-i18n'), 'version' => '5aca6e340eab7503b9b9');