fix(backend): bundle cookie package to fix cjs/esm issues

Why: CJS cookie package causing module compatibility problems in Astro and TanStack Start
What: Move cookie to devDependencies and bundle with tsup noExternal config

Author: nikosdouvlis

packages/backend/package.json

@@ -110,12 +110,12 @@
   },
   "dependencies": {
     "@clerk/shared": "workspace:^",
-    "cookie": "1.0.2",
     "standardwebhooks": "^1.0.0",
     "tslib": "catalog:repo"
   },
   "devDependencies": {
     "@edge-runtime/vm": "5.0.0",
+    "cookie": "1.0.2",
     "msw": "2.11.6",
     "npm-run-all": "^4.1.5",
     "snakecase-keys": "9.0.2",

packages/backend/tsup.config.ts

@@ -21,7 +21,7 @@ export default defineConfig(overrideOptions => {
     bundle: true,
     clean: true,
     minify: false,
-    noExternal: ['snakecase-keys'],
+    noExternal: ['snakecase-keys', 'cookie'],
   };
 
   const esm: Options = {