feat: Update the UI to support the change for Copilot as a universal copilot (#11618)

Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>

app/javascript/dashboard/components-next/sidebar/Sidebar.vue

@@ -519,7 +519,7 @@ const menuItems = computed(() => {
       </div>
     </section>
     <nav class="grid flex-grow gap-2 px-2 pb-5 overflow-y-scroll no-scrollbar">
-      <ul class="flex flex-col gap-2 m-0 list-none">
+      <ul class="flex flex-col gap-1.5 m-0 list-none">
         <SidebarGroup
           v-for="item in menuItems"
           :key="item.name"