Update provider methods to use EitherReader/EitherWriter so they can read from/write to RocksDB when the feature is enabled.

In crates/storage/provider/src/providers/database/provider.rs:

1. TransactionsProvider::transaction_id():

   • Currently: self.tx.get::<tables::TransactionHashNumbers>(tx_hash)
   • Change to: Use EitherReader::new_transaction_hash_numbers() and call get_transaction_hash_number()

2. insert_block() transaction hash writes:

   • Currently: self.tx.put::<tables::TransactionHashNumbers>(*hash, tx_num)
   • Change to: Use EitherWriter::new_transaction_hash_numbers() and call put_transaction_hash_number()

3. remove_blocks_above() transaction hash deletes:

   • Currently: self.tx.delete::<tables::TransactionHashNumbers>(hash, None)
   • Change to: Use EitherWriter::new_transaction_hash_numbers() and call delete_transaction_hash_number()

4. HistoryWriter::unwind_storage_history_indices():

   • Currently: Uses self.tx.cursor_write::<tables::StoragesHistory>()
   • Change to: Use EitherWriter::new_storages_history() for delete operations
   • Note: This method uses unwind_history_shards helper which walks the cursor - may need refactoring

5. HistoryWriter::unwind_account_history_indices():

   • Currently: Uses self.tx.cursor_write::<tables::AccountsHistory>()
   • Change to: Use EitherWriter::new_accounts_history() for delete operations
   • Note: Same pattern as storage history - uses unwind_history_shards helper

In crates/storage/provider/src/providers/state/historical.rs:

6. storage_history_lookup():

   • Currently: Uses history_info::<tables::StoragesHistory, _>() which internally uses DB cursor
   • Change to: Use EitherReader::new_storages_history() and call get_storage_history()
   • Note: The history_info helper uses cursor walking - may need a RocksDB-specific code path

7. account_history_lookup():

   • Currently: Uses history_info::<tables::AccountsHistory, _>() which internally uses DB cursor
   • Change to: Use EitherReader::new_accounts_history() and call get_account_history()
   • Note: Same pattern as storage history - uses history_info helper

Helper methods that may need refactoring for RocksDB:

• unwind_history_shards() - Uses backward cursor walking (seek_exact, delete_current, prev)
• append_history_index() - Uses take_shard() + chunked insert
• history_info() - Uses cursor seek() and prev()