[gnome-control-center] user-accounts: Show ‘Add User’ button when panel is locked

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 2809316fd125819f4e48b26d8fb9087314cd23bf
Author: Philip Withnall <pwithnall endlessos org>
Date:   Tue Dec 8 18:36:36 2020 +0000

    user-accounts: Show ‘Add User’ button when panel is locked
    
    Rather than hiding the ‘Add User’ button when the panel is locked, show
    it in an insensitive state. This gives the user a hint that in order to
    add a new user, they will need to unlock the panel.
    
    See: https://gitlab.freedesktop.org/pwithnall/malcontent/-/issues/26#note_705945
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 panels/user-accounts/cc-user-panel.c  | 2 +-
 panels/user-accounts/cc-user-panel.ui | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/panels/user-accounts/cc-user-panel.c b/panels/user-accounts/cc-user-panel.c
index f096c088d..a0c16c5e6 100644
--- a/panels/user-accounts/cc-user-panel.c
+++ b/panels/user-accounts/cc-user-panel.c
@@ -1366,7 +1366,7 @@ on_permission_changed (CcUserPanel *self)
 
         is_authorized = g_permission_get_allowed (G_PERMISSION (self->permission));
 
-        gtk_widget_set_visible (GTK_WIDGET (self->add_user_button), is_authorized);
+        gtk_widget_set_sensitive (GTK_WIDGET (self->add_user_button), is_authorized);
 
         user = get_selected_user (self);
         if (!user) {
diff --git a/panels/user-accounts/cc-user-panel.ui b/panels/user-accounts/cc-user-panel.ui
index b96528037..32a5c8185 100644
--- a/panels/user-accounts/cc-user-panel.ui
+++ b/panels/user-accounts/cc-user-panel.ui
@@ -1,6 +1,7 @@
 <interface>
   <object class="GtkButton" id="add_user_button">
-    <property name="visible">False</property>
+    <property name="visible">True</property>
+    <property name="sensitive">False</property>
     <property name="can_focus">True</property>
     <property name="label" translatable="yes">_Add User…</property>
     <property name="use_underline">True</property>