Add stock status to active product check

[norgeindian]

As a shop owner not only the active products are interesting, but more the amount of actually saleable products.
So it would be helpful to check not only for the status in product check but also for the stock status resp. the qty in stock.

[sprankhub]

Not sure if this should be included in the existing check or should be a separate check, but I agree this would be helpful 👍