Not tracking inventory correctly when same product in multiple bundles

[TheRealAnubis]

Gem is failing to create multiple inventory units when there are multiple in the order. This will throw off all inventory when there is a product in multiple bundles and a user checks out with those bundles.

For Example:
Bundle 1 => { Prod A x 1, Prod B x 1 }
Bundle 2 => { Prod A x 1, Prod B x 1, Prod C x 1}

If I checkout with both bundles, the system only creates InventoryUnits and StockMovements as follows:
Prod A -> qty 1
Prod B -> qty 1
Prod C -> qty 1

It should be
Prod A -> qty 2
Prod B -> qty 2
Prod C -> qty 1

I first noticed this in the Shipment manifest as it was only rendering "qty 1" for the three distinct products instead of the correct amounts.