fix(l1): update calc_excess_blob_gas

[avilagaston9]

Motivation

We missed updating calc_excess_blob_gas in crates/common/types/block.rs. The old version was using a hardcoded u64, triggering validation errors when syncing in pectra-devnet-6.

Description

• Moves the implementation of calc_excess_blob_gas from crates/blockchain/payload.rs to crates/common/types/block.rs and removes the old one.

Closes None

[github-actions]

| File                                                         | Lines | Diff |
+--------------------------------------------------------------+-------+------+
| /home/runner/work/ethrex/ethrex/crates/blockchain/payload.rs | 556   | -13  |
+--------------------------------------------------------------+-------+------+
| /home/runner/work/ethrex/ethrex/crates/common/types/block.rs | 706   | +21  |
+--------------------------------------------------------------+-------+------+

Total lines added: +21
Total lines removed: 13
Total lines changed: 34