chore: redefine the actuator page as the overview page (#5509)

#### What type of PR is this?

/area ui
/kind improvement
/milestone 2.14.x

#### What this PR does / why we need it:

将原来的 Actuator 页面改为 Overview。

#### Which issue(s) this PR fixes:

Fixes #5508 

#### Does this PR introduce a user-facing change?

```release-note
None
```

ui/console-src/layouts/BasicLayout.vue

@@ -209,7 +209,7 @@ onMounted(() => {
         class="mt-auto p-4 text-center text-sm"
       >
         <span class="text-gray-600">Powered by </span>
-        <RouterLink to="/actuator" class="hover:text-gray-600">
+        <RouterLink to="/overview" class="hover:text-gray-600">
           Halo
         </RouterLink>
       </footer>