Fix max asset size minimum value validation error

Change telegram_max_asset_size input minimum from 0 to 1 (service
requires at least 1 byte). Set default to 50 MB for no extra filtering.

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

Common/Immich Album Watcher/blueprint.yaml

@@ -447,12 +447,11 @@ blueprint:
           description: >
             Maximum file size in megabytes for assets sent to Telegram.
             Assets larger than this will be skipped.
-            Telegram has a 50 MB limit, so values above 50 have no effect.
-            Set to 0 for no size filtering (use Telegram's default limit).
-          default: 0
+            Set to 50 for no extra filtering (Telegram's default limit).
+          default: 50
           selector:
             number:
-              min: 0
+              min: 1
               max: 50
               unit_of_measurement: MB
               mode: slider