Better Long-lived token UI

[sanzoghenzo]

Hi, I spent one day trying to make prometheus reach home assistant with a bearer token, just to find out that I didn't copy the full token (see forum discussion here).

I may have double-clicked on the token text as I always do, but I didn't noticed that the selected text was only a small part of all the token because the text field is too small.

It would be great if the text field could be auto-resized to show all the text in it!
Or, as in many other web services that have secrets creation, a "copy to clipboard" button could be the solution!