feat: update token list and Nginx configuration for Chain 138

- Added new compliant tokens including Tether EUR, Pound Sterling, and others to the DUAL_CHAIN_TOKEN_LIST.
- Updated version in the token list configuration to 1.2.
- Enhanced Nginx configuration to support token-aggregation API and serve token list and network configurations from specified paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/database/migrations/0014_activity_events.down.sql

@@ -0,0 +1,2 @@
+-- Rollback activity_events table
+DROP TABLE IF EXISTS activity_events;