[5.x] Show "after saving" actions when revisions are enabled

[duncanmcclean]

This pull request adds the "after saving" actions which are missing when editing entries in a collection with revisions enabled.

I've added the "after saving" actions to both the save & publish buttons:

Fixes #6025.

[jasonvarga]

I get why you added the dropdown to both buttons but it just seems like an odd pattern. @jackmcdade ?

Especially when you choose an option on one button, the other button shows the old selection's icon.

[duncanmcclean]

Yeah, I don't love it being on both buttons either but figured you might want to go either way. Happy to tweak it though.

[jasonvarga]

I think we should add the dropdown to the publish form (so it acts like the blue save & publish button when not using revisions) and just make the save button stay on the page.

Closing to stay organized. If you want to reopen, please target v5.

[duncanmcclean]

I think we should add the dropdown to the publish form (so it acts like the blue save & publish button when not using revisions) and just make the save button stay on the page.

Closing to stay organized. If you want to reopen, please target v5.

Good idea, updated!