stop padding new append vecs to page size (solana-labs#33607)

* stop padding new append vecs to page size

* for creating test accounts, allocate larger like we used to

accounts-db/src/accounts_db.rs

@@ -5733,11 +5733,7 @@ impl AccountsDb {
             .create_store_count
             .fetch_add(1, Ordering::Relaxed);
         let path_index = thread_rng().gen_range(0..paths.len());
-        let store = Arc::new(self.new_storage_entry(
-            slot,
-            Path::new(&paths[path_index]),
-            Self::page_align(size),
-        ));
+        let store = Arc::new(self.new_storage_entry(slot, Path::new(&paths[path_index]), size));
 
         debug!(
             "creating store: {} slot: {} len: {} size: {} from: {} path: {:?}",
@@ -9913,7 +9909,7 @@ pub mod test_utils {
             // allocate an append vec for this slot that can hold all the test accounts. This prevents us from creating more than 1 append vec for this slot.
             _ = accounts.accounts_db.create_and_insert_store(
                 slot,
-                bytes_required as u64,
+                AccountsDb::page_align(bytes_required as u64),
                 "create_test_accounts",
             );
         }