This fixes the following error:
JS ERROR: Exception in callback for signal: login-format-changed: Error: Wrong type number; string expected
setMessage@resource:///org/gnome/shell/gdm/authPrompt.js:542:13
_showRealmLoginHint@resource:///org/gnome/shell/gdm/loginDialog.js:931:26
_emit@resource:///org/gnome/gjs/modules/core/_signals.js:114:47
_updateLoginFormat@resource:///org/gnome/shell/gdm/realmd.js:85:18
_reloadRealm@resource:///org/gnome/shell/gdm/realmd.js:57:14
_onRealmLoaded@resource:///org/gnome/shell/gdm/realmd.js:64:14
_makeProxyWrapper/</<@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:245:34Fallout from 526f0711.