COLLATION HOTFIX

Fixed SQLSTATE[HY000] 1267 Illegal mix of collations in:
1. Orders -> blocked IP join
2. Pending Checkouts -> duplicate phone comparison

The queries now explicitly use utf8mb4_unicode_ci on both compared expressions, so existing databases with utf8mb4_general_ci columns no longer break the Order screens.

COLLATION_FIX.sql is included as an optional database cleanup script.
