feat: Remove default icon from private workspaces, b=(no-bug), c=workspaces

Author: mr-cheffy

src/zen/workspaces/ZenWorkspaces.mjs

@@ -2614,7 +2614,6 @@ var gZenWorkspaces = new (class extends ZenMultiWindowFeature {
     }
     if (this.isPrivateWindow) {
       name = 'Private ' + name;
-      icon = '🥸';
     }
     // get extra tabs remaning (e.g. on new profiles) and just move them to the new workspace
     const extraTabs = Array.from(gBrowser.tabContainer.arrowScrollbox.children).filter(

src/zen/workspaces/zen-workspaces.css

@@ -447,7 +447,7 @@
   position: relative;
   max-height: var(--zen-workspace-indicator-height);
   min-height: var(--zen-workspace-indicator-height);
-  gap: var(--tab-icon-end-margin);
+  gap: 10px;
   align-items: center;
   flex-direction: row !important;
   max-width: 100%;