printers: Give printer name fewer characters in width

At the default window size, the printer name label is too wide and
collapses the UI into phone mode. (This is the only panel that shows up
in phone mode by default.) Giving the printer name fewer characters
avoids this.
11 jobs for fix-printer-label-width-at-default-window-size in 6 minutes and 8 seconds (queued for 2 seconds)