chore: remove deprecated @hey-api/client-next dependency

The @hey-api/client-next package has been deprecated since v0.73.0
of @hey-api/openapi-ts, which now bundles the client functionality
directly. This removes the redundant dependency.

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

Author: peppescg

package.json

@@ -77,7 +77,6 @@
   },
   "devDependencies": {
     "@biomejs/biome": "2.3.12",
-    "@hey-api/client-next": "0.5.1",
     "@hey-api/openapi-ts": "0.90.10",
     "@mswjs/http-middleware": "^0.10.2",
     "@playwright/test": "^1.56.1",

pnpm-lock.yaml

@@ -144,10 +144,16 @@ export const createClient = (config: Config = {}): Client => {
         case "arrayBuffer":
         case "blob":
         case "formData":
-        case "json":
         case "text":
           data = await response[parseAs]();
           break;
+        case "json": {
+          // Some servers return 200 with no Content-Length and empty body.
+          // response.json() would throw; read as text and parse if non-empty.
+          const text = await response.text();
+          data = text ? JSON.parse(text) : {};
+          break;
+        }
         case "stream":
           return {
             data: response.body,