v2.4.3: Replace Discord links with Community Chat & Telegram

Discord server was DMCA'd. All Discord links replaced with:
- Community Chat (Stoat): chat.sanhost.net
- Telegram Channel: @hf2p_og
- Telegram Group: @sanhostnet

Launcher UI: added community links on main screen, renamed
Discord nav to Community Chat, updated popup modal.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hytale-f2p-launcher",
-  "version": "2.4.2",
+  "version": "2.4.3",
   "description": "A modern, cross-platform launcher for Hytale with automatic updates and multi-client support",
   "homepage": "https://git.sanhost.net/sanasol/hytale-f2p",
   "main": "main.js",