Add rewards to is_syscall_id() (#5035)

sdk/src/syscall/mod.rs

@@ -11,6 +11,7 @@ pub mod tick_height;
 pub fn is_syscall_id(id: &Pubkey) -> bool {
     current::check_id(id)
         || fees::check_id(id)
+        || rewards::check_id(id)
         || slot_hashes::check_id(id)
         || tick_height::check_id(id)
 }