[tooltip] Bikeshed the name for a popovertargetaction value to hover/focus trigger #767

See this discussion, but the current proposal is to do "hover triggering" via a new value for the popovertargetaction attribute:

<button popovertarget=foo popovertargetaction=hover>
  Hover me!
</button>
<div popover id=foo> Popover </div>

However, "hover" triggering doesn't tell the whole story, since keyboard users need focus to trigger the popover, and touch users need long press to trigger it. So the question is: what should this value be called?

Here are some ideas I've heard, please feel free to add more:

• popovertargetaction=hover
• popovertargetaction=over
• popovertargetaction=active
• popovertargetaction=interest
• {your idea here}