fix(levm): eip4844 tests fix (#1720)

**Motivation**

We still need to fix some tests to use the levm feature by default
**Description**

Pending tests to fix:

- [x] parse_and_execute::eip4844_blobs/blob_txs/invalid_normal_gas.json
- [x]
parse_and_execute::eip4844_blobs/blobhash_opcode/blobhash_invalid_blob_index.json
- [x]
parse_and_execute::eip4844_blobs/blobhash_opcode/blobhash_gas_cost.json
- [x]
parse_and_execute::eip4844_blobs/blobhash_opcode/blobhash_multiple_txs_in_block.json
- [x]
parse_and_execute::eip4844_blobs/excess_blob_gas/correct_decreasing_blob_gas_costs.json
- [x]
parse_and_execute::eip4844_blobs/excess_blob_gas/correct_increasing_blob_gas_costs.json
- [x]
parse_and_execute::eip4844_blobs/blobhash_opcode_contexts/blobhash_opcode_contexts.json
- [x]
parse_and_execute::eip4844_blobs/blobhash_opcode/blobhash_scenarios.json

You can double check with:
```sh
cargo test  -p ef_tests-levm --workspace --features levm  --exclude ethrex-prover --exclude ethrex-levm --exclude ef_tests-levm --exclude ethrex-l2 -- --nocapture --skip test_contract_compilation
```

crates/common/types/transaction.rs

@@ -298,7 +298,7 @@ impl Transaction {
             TxType::EIP4844 => {
                 let priority_fee_per_gas = min(
                     self.max_priority_fee()?,
-                    self.max_fee_per_gas()? - base_fee_per_gas?,
+                    self.max_fee_per_gas()?.saturating_sub(base_fee_per_gas?),
                 );
                 Some(priority_fee_per_gas + base_fee_per_gas?)
             }

crates/vm/levm/src/constants.rs

@@ -42,8 +42,8 @@ pub const MAX_BLOB_NUMBER_PER_BLOCK: usize = 6;
 
 // Blob constants
 pub const TARGET_BLOB_GAS_PER_BLOCK: U256 = U256([393216, 0, 0, 0]); // TARGET_BLOB_NUMBER_PER_BLOCK * GAS_PER_BLOB
-pub const MIN_BASE_FEE_PER_BLOB_GAS: u64 = 1;
-pub const BLOB_BASE_FEE_UPDATE_FRACTION: u64 = 3338477;
+pub const MIN_BASE_FEE_PER_BLOB_GAS: U256 = U256::one();
+pub const BLOB_BASE_FEE_UPDATE_FRACTION: U256 = U256([3338477, 0, 0, 0]);
 pub const MAX_BLOB_COUNT: usize = 6;
 pub const VALID_BLOB_PREFIXES: [u8; 2] = [0x01, 0x02];
 

crates/vm/levm/src/gas_cost.rs

@@ -799,16 +799,16 @@ pub fn staticcall(
     calculate_cost_and_gas_limit_call(true, gas_from_stack, gas_left, call_gas_costs, 0)
 }
 
-pub fn fake_exponential(factor: u64, numerator: u64, denominator: u64) -> Result<u64, VMError> {
-    let mut i = 1;
-    let mut output: u64 = 0;
+pub fn fake_exponential(factor: U256, numerator: U256, denominator: U256) -> Result<U256, VMError> {
+    let mut i = U256::one();
+    let mut output: U256 = U256::zero();
 
     // Initial multiplication: factor * denominator
     let mut numerator_accum = factor
         .checked_mul(denominator)
         .ok_or(InternalError::ArithmeticOperationOverflow)?;
 
-    while numerator_accum > 0 {
+    while !numerator_accum.is_zero() {
         // Safe addition to output
         output = output
             .checked_add(numerator_accum)
@@ -828,7 +828,7 @@ pub fn fake_exponential(factor: u64, numerator: u64, denominator: u64) -> Result
             ))?;
 
         i = i
-            .checked_add(1)
+            .checked_add(U256::one())
             .ok_or(InternalError::ArithmeticOperationOverflow)?;
     }
 

crates/vm/levm/src/opcode_handlers/block.rs

@@ -171,7 +171,7 @@ impl VM {
         let index = current_call_frame.stack.pop()?;
 
         let blob_hashes = &self.env.tx_blob_hashes;
-        if index > blob_hashes.len().into() {
+        if index >= blob_hashes.len().into() {
             current_call_frame.stack.push(U256::zero())?;
             return Ok(OpcodeSuccess::Continue);
         }

crates/vm/levm/src/vm.rs

@@ -695,14 +695,9 @@ impl VM {
     pub fn get_base_fee_per_blob_gas(&self) -> Result<U256, VMError> {
         fake_exponential(
             MIN_BASE_FEE_PER_BLOB_GAS,
-            self.env
-                .block_excess_blob_gas
-                .unwrap_or_default()
-                .try_into()
-                .map_err(|_| VMError::VeryLargeNumber)?, //Maybe replace unwrap_or_default for sth else later.
+            self.env.block_excess_blob_gas.unwrap_or_default(),
             BLOB_BASE_FEE_UPDATE_FRACTION,
         )
-        .map(|ok_value| ok_value.into())
     }
 
     /// ## Description