correctly initialize account overrides (#595)

bundle/src/bundle_execution.rs

@@ -251,8 +251,20 @@ pub fn load_and_execute_bundle<'a>(
             metrics: BundleExecutionMetrics::default(),
         };
     }
+
     let mut binding = AccountOverrides::default();
     let account_overrides = account_overrides.unwrap_or(&mut binding);
+    if is_simulation {
+        bundle
+            .transactions
+            .iter()
+            .map(|tx| tx.message().account_keys())
+            .for_each(|account_keys| {
+                account_overrides.upsert_account_overrides(
+                    bank.get_account_overrides_for_simulation(&account_keys),
+                );
+            });
+    }
 
     let mut chunk_start = 0;
     let start_time = Instant::now();

runtime/src/bank.rs

@@ -4411,7 +4411,11 @@ impl Bank {
         }
     }
 
-    fn get_account_overrides_for_simulation(&self, account_keys: &AccountKeys) -> AccountOverrides {
+    // NOTE: Do not revert this back to private during rebases.
+    pub fn get_account_overrides_for_simulation(
+        &self,
+        account_keys: &AccountKeys,
+    ) -> AccountOverrides {
         let mut account_overrides = AccountOverrides::default();
         let slot_history_id = sysvar::slot_history::id();
         if account_keys.iter().any(|pubkey| *pubkey == slot_history_id) {