Auto close floating window to prevent cut off for some tabs

[mjmsmith]

In the floating window, when the disclosure arrow (>) is an open for a recent build, some internal tabs get cut off. See screenshots.

(Because the disclosure arrow was open before I switched to the network tab, I didn't realize that was the cause.)

See screenshots.

[AvdLee]

Ah, good point!! I should probably auto close it after a few seconds 👌

[AvdLee]

@paulmgeurts some users keep this dropdown open, causing the UI to be odd (it scrolls down clipped). Let's add a timer that closes it automatically. Make sure to cancel the timer if the user closes it themselves.

You can search for "There are no other recent builds" to find the code for this part!