Add new legacy RPCs and fix block hash routing

[zjg555543]

Summary

This PR adds legacy RPC forwarding support for additional methods and improves block hash routing.
Support Legacy RPC List
Base on PR:#6

1. Added Legacy RPC Forwarding

Added legacy RPC forwarding support for the following methods:

• eth_transactionPreExec - Transaction pre-execution simulation
• eth_call - Contract call execution
• eth_createAccessList - Access list creation (EIP-2930)
• eth_estimateGas - Gas estimation
• eth_getInternalTransactions - Get internal transactions by tx hash
• eth_getBlockInternalTransactions - Get all internal transactions in a block

When querying historical data (block number < cutoff_block or block hash not found locally), these methods automatically forward requests to the configured legacy RPC endpoint.

2. Fixed Block Hash Routing

Improved should_route_block_id_to_legacy() to correctly handle block hash queries:

• Block Number: Route to legacy if block_number < cutoff_block
• Block Hash: Route to legacy if block hash not found in local database

match provider.block_number(block_hash) {
Some(_) => query_local(), // Found locally
None => forward_to_legacy(), // Not found, try legacy
}This ensures block hash queries work correctly across the cutoff boundary.