Fix action modal on details page.

[sanis]

Hi,

I have noticed that action buttons on details page were broken after this commit:
cfcff0a

This happens because openConfirmationModal(action) does not exist on DetachedAction anymore, so it has to have call to the same determineActionStrategy(action) to trigger the same effect as on index page. Since selectedActionKey was not set anymore no action was called.

Also I have made changes to build project successfully:

composer install
npm i
npm run prod