fix(es_extended): correct SQL insertion logic in ESX.AddItems

[DebugPadawan]

Fixes a bug where items created with ESX.AddItems are not being persisted to the database because the previous oxmysql prepare.await implementation was receiving a list of objects instead of properly formatted primitives/arrays for bulk insertion.

Resolves #1768

Changes

• Replaced the broken MySQL.prepare.await insertion with MySQL.insert.await, mapping the toInsert tables to an array of primitives for standard bulk insertion.

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