Adw/ViewSwitcher: Fix crash with icon size (#1319)

* Adw/ViewSwitcher: Fix crash with icon size

* Always put border-spacing

Author: danirabbit

src/gtk-4.0/widgets/adw/PreferencesWindow.scss

@@ -3,14 +3,6 @@ window.preferences.csd {
 
     headerbar {
         @extend .flat;
-
-        viewswitcher button.toggle {
-            border-radius: rem(3px);
-
-            box.horizontal {
-                border-spacing: 0.5em;
-            }
-        }
     }
 
     preferencespage > scrolledwindow {

src/gtk-4.0/widgets/adw/ViewSwitcher.scss

@@ -1,5 +1,7 @@
 viewswitcher button {
     stack > box {
+        border-spacing: 0.5em;
+
         label.active {
             font-weight: bold;
         }
@@ -24,11 +26,6 @@ viewswitcher button {
 
 headerbar viewswitcher button {
     border-radius: rem(3px);
-
-    image {
-        opacity: 0;
-        -gtk-icon-size: 0;
-    }
 }
 
 viewswitcherbar {