In multi-factor authentication cases we may end up clearing the current
entry, but we are potentially leaving a previously filled inactive entry
as it is.
Avoid this, and clear all the entries we have when clearing the prompt.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3850>
(cherry picked from commit
b260314a3986b9936ccfb33945def926604acc8a)
clear() {
this._entry.text = '';
+ this._inactiveEntry.text = '';
this.stopSpinning();
this._authList.clear();
this._authList.hide();