[gnome-shell-sass] style: Force symbolic icons in quick settings

[Florian Müllner <fmuellner src gnome org>]

commit 5177db2924faf52de23b6fdf2a018e8dea8e3c90
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Aug 10 16:48:25 2022 +0200

    style: Force symbolic icons in quick settings
    
    The icon for the Settings toggle comes from the .desktop file,
    so isn't symbolic by default. Enforce that via the -st-icon-style
    property, like the .aggregate-menu style did.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2419>

 widgets/_quick-settings.scss | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/widgets/_quick-settings.scss b/widgets/_quick-settings.scss
index 5034243..225ab48 100644
--- a/widgets/_quick-settings.scss
+++ b/widgets/_quick-settings.scss
@@ -91,6 +91,8 @@
 .quick-settings-system-item {
   & > StBoxLayout { spacing: 2 * $base_padding; }
 
+  .icon-button > StIcon { -st-icon-style: symbolic; }
+
   & .power-item {
     min-height: 0;
     min-width: 0;