Use activate functions for Package row parents

[danirabbit]

Fixes #2371

Can be rebase merged. Fixes non-mouse activation methods

[leolost2605]

Can we use the actionable interface that listboxrow and flowboxchild implement?

[danirabbit]

Looks like listboxrow implements actionable, but not flowboxchild. I'll try it! Thanks for the suggestion

[danirabbit]

@leolost2605 actually I don't think we can because these are bin subclasses not listboxrow or flowboxchild because sometimes they're used in FlowBox and sometimes in ListBox

[leolost2605]

Looks like listboxrow implements actionable, but not flowboxchild. I'll try it! Thanks for the suggestion

Ah right

@leolost2605 actually I don't think we can because these are bin subclasses not listboxrow or flowboxchild because sometimes they're used in FlowBox and sometimes in ListBox

I meant in the widget create funcs but given that we don't use listbox that often this LGTM