window-list: Move additional padding into buttons

Commit ca1c4b0f9e added additional padding, which means that the
interactive area of buttons no longer extends to the bottom of
the screen.

Address this by moving the new padding into the buttons themselves.
That restores the Fittsability of the bottom bar, without affecting
the cleaner visual appearance.

Close https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/issues/453

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/291>

extensions/window-list/stylesheet-dark.css

@@ -13,11 +13,11 @@
 .bottom-panel {
   background-color: #000000;
   border-top-width: 0px;
-  padding: 2px;
+  height: 2.45em;
 }
 
 .window-button {
-  padding: 2px, 1px;
+  padding: 4px, 3px;
 }
 
 .window-button:first-child:ltr {
@@ -87,13 +87,13 @@
 
 .window-list-workspace-indicator .status-label-bin {
   background-color: rgba(200, 200, 200, 0.3);
-  padding: 0 3px;
+  padding: 5px;
   margin: 3px;
 }
 
 .window-list-workspace-indicator .workspaces-box {
   spacing: 3px;
-  padding: 3px;
+  padding: 5px;
 }
 
 .window-list-workspace-indicator .workspace {

extensions/window-list/stylesheet-light.css

@@ -10,8 +10,7 @@
 #panel.bottom-panel {
     border-top-width: 1px;
     border-bottom-width: 0px;
-    height: 2.25em ;
-    padding: 2px;
+    height: 2.5em;
   }
 
   .bottom-panel .window-button > StWidget,