window-list: Adjust to workspace-indicator changes

Keep the `.panel-button` class to get the expected hover/focus/active
styling when using a regular menu button, but remove the horizontal
padding when using previews for fittsability.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/405>

extensions/window-list/extension.js

@@ -1472,12 +1472,6 @@ class BottomWorkspaceIndicator extends WorkspaceIndicator {
         GObject.registerClass(this);
     }
 
-    constructor(params) {
-        super(params);
-
-        this.remove_style_class_name('panel-button');
-    }
-
     setMenu(menu) {
         super.setMenu(menu);
 

extensions/window-list/stylesheet-dark.css

@@ -6,6 +6,11 @@
  */
 @import url("stylesheet-workspace-switcher-dark.css");
 
+.window-list-workspace-indicator.previews {
+  -natural-hpadding: 0 !important;
+  -minimum-hpadding: 0 !important;
+}
+
 .window-list {
   spacing: 2px;
   font-size: 10pt;