Fix user stuck in logged out state in dashboard (#4421)

## Problem solved

Short description of the bug fixed or feature added

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## PR-Codex overview
This PR removes a redirect logic for the "/login" path and updates path splitting logic in `middleware.ts`.

### Detailed summary
- Removed redirect logic for "/login" path
- Updated path splitting logic in `middleware.ts`

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apps/dashboard/src/middleware.ts

@@ -41,11 +41,6 @@ export async function middleware(request: NextRequest) {
       );
     }
   }
-  // /login redirect
-  if (pathname === "/login" && authCookie) {
-    // if the user is logged in, redirect to dashboard
-    return redirect(request, "/dashboard");
-  }
 
   // remove '/' in front and then split by '/'
   const paths = pathname.slice(1).split("/");