R1:1277db945258

When users hover over a column trigger menu, show a "preview" with the rules instead of a tooltip

Summary:
Ref T5474. The first rough cut of triggers showed some of the trigger rules in a tooltip when you hover over the "add/remove" trigger menu.

This isn't great since we don't have much room and it's a bit finnicky / hard to read.

Since we have a better way to show effects now in the drop preview, just use that instead. When you hover over the trigger menu, preview the trigger in the "drop effect"…