cache all accounts after loading

Author: HaoranYi

svm/src/account_loader.rs

@@ -215,9 +215,9 @@ fn load_transaction_accounts<CB: TransactionProcessingCallback>(
                 } else {
                     let is_account_writable = message.is_writable(i);
                     callbacks
-                        .load_account_with(key, |account| {
-                            // only cache non program accounts
-                            !program_owners.contains(account.owner())
+                        .load_account_with(key, |_account| {
+                            // cache the account in read-only cache
+                            true
                         })
                         .map(|(mut account, _slot)| {
                             if program_owners.contains(account.owner()) {