[UiActions][Drilldowns] Actions sorting in context menu

[Dosant]

When attaching actions to a trigger there is no way to control actions ordering in context menu except relying on the order in which actions are attached. Relying on that we achived desired order in drilldown before:

Before ~7.9:

1. Default "apply filter to current view" first
2. Dynamic actions (Drilldowns) go after

After ~7.9:

We introduced nested triggers. So the actions in context menu aggregated from multiple triggers. In case of URL drilldown the order is not the one we'd want:

That's because when user clicks, there is VALUE_CLICK_TRIGGER which gets "Show on Github" action. Then there is APPLY_FILTER_TRIGGER triggered as nested trigger which finds "Apply filter on current view".

Part of: #71854

[elasticmachine]

Pinging @elastic/kibana-app-arch (Team:AppArch)