It looks like Android may have (somewhat recently) changed or unified their popover toolbar UI. We should update the Super Editor Android default toolbar to match.

The new toolbar is initially pill shaped, with non bold text. There's no visual division between buttons, but when pressed, the button highlight area is rectangular.

The toolbar often has a "3 dots" expansion button. When that button is pressed, the horizontal pill-shaped toolbar animates to a rectangle with a vertical list of the items that weren't originally visible on the toolbar.

We want to make sure we match the following:

• Shape (including both the pill shape and the height)
• Button text styles
• Button press highlight area
• Color scheme (which is probably tied to something in the app's theme and/or brightness)
• Animation from a horizontal list to a vertical overflow menu (also, pay attention to when/why the overflow menu appears above the selection vs below the selection, and check what happens in situations with limited space)