fix(api_server): fix blob_gas length (#2673)

Discovered during testing Gateway integration (our own asserts from
query.rs started being triggered by our eth api implementation :D )

---------

Co-authored-by: perekopskiy <mikeson.dp@gmail.com>

core/node/api_server/src/web3/namespaces/eth.rs

@@ -690,15 +690,16 @@ impl EthNamespace {
             base_fee_per_gas.len()
         ]);
 
+        // `base_fee_per_gas` for next L2 block cannot be calculated, appending last fee as a placeholder.
+        base_fee_per_gas.push(*base_fee_per_gas.last().unwrap());
+
         // We do not support EIP-4844, but per API specification we should return 0 for pre EIP-4844 blocks.
         let base_fee_per_blob_gas = vec![U256::zero(); base_fee_per_gas.len()];
-        let blob_gas_used_ratio = vec![0.0; base_fee_per_gas.len()];
+        let blob_gas_used_ratio = vec![0.0; gas_used_ratio.len()];
 
-        // `base_fee_per_gas` for next L2 block cannot be calculated, appending last fee as a placeholder.
-        base_fee_per_gas.push(*base_fee_per_gas.last().unwrap());
         Ok(FeeHistory {
             inner: web3::FeeHistory {
-                oldest_block: zksync_types::web3::BlockNumber::Number(oldest_block.into()),
+                oldest_block: web3::BlockNumber::Number(oldest_block.into()),
                 base_fee_per_gas,
                 gas_used_ratio,
                 reward,

core/tests/ts-integration/tests/api/web3.test.ts

@@ -843,6 +843,10 @@ describe('web3 API compatibility tests', () => {
         expect(parseInt(response.oldestBlock)).toEqual(receipt.blockNumber - 1);
 
         expect(response.baseFeePerGas).toHaveLength(3);
+        expect(response.baseFeePerBlobGas).toHaveLength(3);
+        expect(response.gasUsedRatio).toHaveLength(2);
+        expect(response.blobGasUsedRatio).toHaveLength(2);
+        expect(response.l2PubdataPrice).toHaveLength(2);
         for (let i = 0; i < 2; i += 1) {
             const expectedBaseFee = (await alice.provider.getBlock(receipt.blockNumber - 1 + i)).baseFeePerGas;
             expect(BigInt(response.baseFeePerGas[i])).toEqual(expectedBaseFee);