Auto Select Next Available Product Variant

If the auto selected variant is sold out, the next available one should be auto selected.

Currently with products that have multiple options (e.g. bundles), if one of the auto selected variants is sold out, it then looks like everything in the second option is sold out also, instead of just switching to the next available options.

E.g. because “S” is sold out, but auto selected, everything for the first variant now looks sold out…

Which is actually not the case…