Release version 1.2.3 - Admin UI styling improvements

Fixed two admin UI bugs:
- Applied borderless table styling to all tier/package tables for consistency
- Fixed checkbox tooltip display and improved checkbox-label spacing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

composer.json

@@ -1,7 +1,7 @@
 {
     "name": "magdev/wc-tier-package-prices",
     "description": "WooCommerce plugin for tier pricing and package prices with Twig templates",
-    "version": "1.2.2",
+    "version": "1.2.3",
     "type": "wordpress-plugin",
     "license": "GPL-2.0-or-later",
     "authors": [