when remember window last size is maximized, don't snap to letterbox size
from #42192 (closed) When bookmark toolbar is set to only show on new tabs, if the user has chosen to remember last window size, and that size is maximized, don't snap down to LBing - see https://github.com/mullvad/mullvad-browser/issues/270 - triggered on first http(s) page load
cc @ma1
Edited by Thorin