Order update Handler does not load or synchronize OrderItems

[PremalWonderbiz]

Problem

During order update, the current implementation retrieves the order using:

var order = await dbContext.Orders
    .FindAsync([orderId], cancellationToken);

This does not load OrderItems, so the aggregate is partially hydrated.

Consequences

Because of this:

• OrderItems are empty during update
• Order-level calculations (e.g. TotalPrice) can become incorrect (often 0)
• Changes to order items (update quantity/price, add, or remove items) are not handled

Expected Behavior

When updating an order:

• The Order aggregate should be loaded together with its OrderItems
• Updates to order items (add / update / remove) should be reflected in the aggregate
• Order calculations should be based on the actual persisted items

Suggested Direction

Load the order with its items:

dbContext.Orders
    .Include(o => o.OrderItems);

Synchronize OrderItems through the Order aggregate during update.