fix(db_world): ensure attributeMask exists before 2023_07_17_01 update

The column was introduced in old/9.x SQL but not in the archive chain;
fresh archive-only installs lacked the column. Add idempotent ALTER via
INFORMATION_SCHEMA before updating spell_enchant_proc_data.

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

data/sql/archive/db_world/2023_07_17_01.sql

@@ -1,3 +1,19 @@
 -- DB update 2023_07_17_00 -> 2023_07_17_01
 --
+SET @attrmask_exists := (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'spell_enchant_proc_data'
+    AND COLUMN_NAME = 'attributeMask'
+);
+SET @sql := IF(
+  @attrmask_exists > 0,
+  'SELECT 1',
+  'ALTER TABLE `spell_enchant_proc_data` ADD COLUMN `attributeMask` INT UNSIGNED NOT NULL DEFAULT 0 AFTER `procEx`'
+);
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
 UPDATE `spell_enchant_proc_data` SET `attributeMask` = 0x2 WHERE `entry` = 2675;