Only sum accounts data len from non-zero lamport accounts (#22309) (#22317)

(cherry picked from commit ab13e39518)

Co-authored-by: Brooks Prumo <brooks@solana.com>

runtime/src/accounts_db.rs

@@ -6708,7 +6708,9 @@ impl AccountsDb {
                         &self.account_indexes,
                     );
                 }
+                if !stored_account.is_zero_lamport() {
                     accounts_data_len += stored_account.data().len() as u64;
+                }
 
                 if !rent_collector.should_collect_rent(&pubkey, &stored_account, false) || {
                     let (_rent_due, exempt) = rent_collector.get_rent_due(&stored_account);