fix: Fixed all tabs button appearing on the sidebar, b=(no-bug), c=common, tabs

Author: mr-cheffy

src/zen/common/ZenUIManager.mjs

@@ -71,7 +71,7 @@ var gZenUIManager = {
     );
     gZenVerticalTabsManager.actualWindowButtons.removeAttribute('zen-has-hover');
     gZenVerticalTabsManager.recalculateURLBarHeight();
-    setTimeout(gURLBar.formatValue.bind(gURLBar), 0);
+    setTimeout(gURLBar.formatValue.bind(gURLBar), 350);
     if (!this._preventToolbarRebuild) {
       setTimeout(() => {
         ZenWorkspaces.updateTabsContainers();

src/zen/common/styles/zen-browser-ui.css

@@ -255,3 +255,7 @@
     opacity: 1;
   }
 }
+
+:root:not([customizing]) #TabsToolbar-customization-target > #alltabs-button {
+  display: none;
+}

src/zen/common/styles/zen-urlbar.css

@@ -30,6 +30,9 @@
 
   --urlbar-margin-inline: 5px;
   --urlbar-container-padding: 5px;
+  :root[zen-single-toolbar='true'] {
+    --urlbar-container-padding: 4px;
+  }
 }
 
 :root:not([zen-single-toolbar='true']) #urlbar:not([zen-floating-urlbar='true']) {

src/zen/tabs/zen-tabs/vertical-tabs.css

@@ -211,7 +211,7 @@
    Tabs Toolbar Customization Target
    ========================================================================== */
 #TabsToolbar-customization-target {
-  position: relative; /* For pseudo-element positioning */
+  position: relative;
   max-width: 100%;
   gap: 0; /* Remove default gap */