trigger: Fix missing subscription.* translations

This commit triggers the i18n workflow to generate missing translations
for subscription.* keys that were added after the last locale update.

The subscription.titleUnsubscribed key was added in f2aea9c on Nov 1,
but the last locale update was on Oct 30 (a189e51).

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

Co-Authored-By: Claude <[email protected]>

Author: snomiao

.github/.i18n-trigger

@@ -0,0 +1,10 @@
+# This file is used to trigger the i18n workflow
+# See .github/workflows/i18n-update-core.yaml
+# 
+# The workflow will automatically:
+# 1. Collect i18n strings from the UI
+# 2. Generate translations using OpenAI
+# 3. Commit updated locale files
+#
+# This trigger was created to fix missing subscription.* translations
+# that were added after the last automatic locale update.