[Dashboard] Rename RPC Edge to RPC and add redirect (#7509)

# Rename `/rpc-edge` to `/rpc`

This PR renames the `/rpc-edge` route to `/rpc` in the dashboard:

- Updates the route in `framer-rewrites.js`
- Adds a redirect from `/rpc-edge` to `/rpc` to maintain backward compatibility

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

* **New Features**
  * Added a redirect from /rpc-edge to /rpc for dashboard requests.

* **Chores**
  * Updated references from /rpc-edge to /rpc in the scale category configuration.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: jnsdls

apps/dashboard/framer-rewrites.js

@@ -16,7 +16,7 @@ module.exports = [
   // -- end build category
 
   // -- scale category
-  "/rpc-edge",
+  "/rpc",
   "/insight",
   "/storage",
   // -- end scale category

apps/dashboard/redirects.js

@@ -435,6 +435,11 @@ async function redirects() {
       permanent: false,
       source: "/engine",
     },
+    {
+      destination: "/rpc",
+      permanent: false,
+      source: "/rpc-edge",
+    },
     ...legacyDashboardToTeamRedirects,
     ...projectPageRedirects,
     ...teamPageRedirects,