feat: Contact filter preview (#10516)

# Pull Request Template

## Description

**Screenshots**
<img width="986" alt="image"
src="https://github.com/user-attachments/assets/8df44237-ec51-45d3-aed3-518cded42f5d">

<img width="986" alt="image"
src="https://github.com/user-attachments/assets/2213ce2e-2461-41f0-a05a-0f955a4d7e3a">

**Story**
<img width="992" alt="image"
src="https://github.com/user-attachments/assets/f8e25fe2-11e8-4b9b-8d0b-357f9b7b6e39">

app/javascript/dashboard/components-next/HelpCenter/PortalSwitcher/PortalSwitcher.vue

@@ -108,6 +108,7 @@ const redirectToPortalHomePage = () => {
           <Button
             icon="i-lucide-arrow-up-right"
             variant="ghost"
+            color="slate"
             icon-lib="lucide"
             size="sm"
             class="!w-6 !h-6 hover:bg-n-slate-2 text-n-slate-11 !p-0.5 rounded-md"
@@ -133,6 +134,7 @@ const redirectToPortalHomePage = () => {
         :key="index"
         :label="portal.name"
         variant="ghost"
+        color="slate"
         trailing-icon
         :icon="isPortalActive(portal) ? 'i-lucide-check' : ''"
         class="!justify-end !px-2 !py-2 hover:!bg-n-alpha-2 [&>.i-lucide-check]:text-n-teal-10 h-9"