fix(l1): fix effective gas price calculation (#1881)

**Description**

This PR fixes the effective gas price calculation, now returning `None`
if the `max_fee_per_gas` is lower than the `base_fee_per_gas`. This is
later converted to a `VMError::InvalidTransaction` before processing the
actual transaction.

---------

Co-authored-by: Julian Ventura <julian.ventura@lambdaclass.com>

crates/common/types/transaction.rs

@@ -310,6 +310,11 @@ impl Transaction {
     }
 
     fn calc_effective_gas_price(&self, base_fee_per_gas: Option<u64>) -> Option<u64> {
+        if self.max_fee_per_gas()? < base_fee_per_gas? {
+            // This is invalid, can't calculate
+            return None;
+        }
+
         let priority_fee_per_gas = min(
             self.max_priority_fee()?,
             self.max_fee_per_gas()?.saturating_sub(base_fee_per_gas?),