fix(functions): set access token on FunctionsClient

Author: grdsdev

Sources/Supabase/SupabaseClient.swift

@@ -393,6 +393,7 @@ public final class SupabaseClient: Sendable {
       return nil
     }
 
+    functions.setAuth(token: accessToken)
     realtime.setAuth(accessToken)
     await realtimeV2.setAuth(accessToken)
   }