Dependencies Updates, Sidebar fixes, default plan, Radix single package (#297)

* Refactor Radix UI imports and update package dependencies, fix Sidebar "group" references, add default value to plan picker to preselect a plan

packages/billing/stripe/package.json

@@ -17,7 +17,7 @@
   "dependencies": {
     "@stripe/react-stripe-js": "^3.7.0",
     "@stripe/stripe-js": "^7.4.0",
-    "stripe": "^18.2.1"
+    "stripe": "^18.3.0"
   },
   "devDependencies": {
     "@kit/billing": "workspace:*",
@@ -29,9 +29,9 @@
     "@kit/ui": "workspace:*",
     "@types/react": "19.1.8",
     "date-fns": "^4.1.0",
-    "next": "15.3.4",
+    "next": "15.3.5",
     "react": "19.1.0",
-    "zod": "^3.25.67"
+    "zod": "^3.25.74"
   },
   "typesVersions": {
     "*": {