chore: add missing total difficulty consts (alloy-rs/hardforks#76)

Author: mattsse

crates/hardforks/src/ethereum/mainnet.rs

@@ -42,6 +42,9 @@ pub const MAINNET_PRAGUE_BLOCK: u64 = 22_431_084;
 /// Paris hard fork activation terminal total difficulty is 58_750_000_000_000_000_000_000_U256.
 pub const MAINNET_PARIS_TTD: U256 = uint!(58_750_000_000_000_000_000_000_U256);
 
+/// The final total difficulty of mainnet
+pub const MAINNET_PARIS_FINAL_TD: U256 = uint!(58_750_003_716_598_352_816_469U256);
+
 /// Frontier hard fork activation timestamp is 1438226773.
 pub const MAINNET_FRONTIER_TIMESTAMP: u64 = 1_438_226_773;
 /// Homestead hard fork activation timestamp is 1457938193.

crates/hardforks/src/ethereum/sepolia.rs

@@ -6,6 +6,10 @@ use alloy_primitives::{U256, uint};
 pub const SEPOLIA_PARIS_BLOCK: u64 = 1_450_409;
 /// Paris sepolia hard fork activation terminal total difficulty is 17_000_000_000_000_000_U256.
 pub const SEPOLIA_PARIS_TTD: U256 = uint!(17_000_000_000_000_000_U256);
+
+/// The final total difficulty of sepolia
+pub const SEPOLIA_PARIS_FINAL_TD: U256 = uint!(17_000_018_015_853_232U256);
+
 /// Paris sepolia fork block is 1735371. See [`ForkCondition::TTD`](crate::ForkCondition::TTD).
 pub const SEPOLIA_PARIS_FORK_BLOCK: u64 = 1_735_371;
 /// Shanghai sepolia hard fork activation block is 2990908.