style(web-admin): align menu text badge with Fresh Mint danger

Use #dc2626 for sidebar numeric badges so they match the approved
case-style red counters without leaving the design token chain.

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/src/assets/styles/core/app.scss

@@ -321,7 +321,7 @@ body {
   font-size: 10px;
   color: #fff;
   text-align: center;
-  background: #fd4e4e;
+  background: #dc2626;
   border-radius: 4px;
 
   &--circle {