Add maximum asset size filter for Telegram media

- Add telegram_max_asset_size input (0-50 MB slider)
- Pass max_asset_data_size parameter to send_telegram_notification
- Allows filtering out large files before sending to Telegram
- Set to 0 for no filtering (default Telegram 50 MB limit)

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

manifest.json

@@ -1,3 +1,3 @@
 {
-  "version": "1.27.0"
+  "version": "1.28.0"
 }