fix: only add credentials on client-side

resolves nuxt-modules#660

Author: danielroe

src/runtime/minimal-client.ts

@@ -47,14 +47,17 @@ export function createClient (config: ClientConfig) {
   const useCdn = perspective !== 'previewDrafts' && config.useCdn
 
   const fetchOptions: RequestInit = {
-    credentials: withCredentials ? 'include' : 'omit',
     headers: {
       ...(token ? { Authorization: `Bearer ${token}` } : {}),
       Accept: 'application/json',
       ...(process.server ? { 'accept-encoding': 'gzip, deflate' } : {}),
     },
   }
 
+  if (import.meta.client) {
+    fetchOptions.credentials = withCredentials ? 'include' : 'omit'
+  }
+
   return {
     clone: () =>
       createClient({