fix: Complete snowbridge pezpallet rebrand and critical bug fixes

- snowbridge-pezpallet-* → pezsnowbridge-pezpallet-* (201 refs)
- pallet/ directories → pezpallet/ (4 locations)
- Fixed pezpallet.rs self-include recursion bug
- Fixed sc-chain-spec hardcoded crate name in derive macro
- Reverted .pezpallet_by_name() to .pallet_by_name() (subxt API)
- Added BizinikiwiConfig type alias for zombienet tests
- Deleted obsolete session state files

Verified: pezsnowbridge-pezpallet-*, pezpallet-staking,
pezpallet-staking-async, pezframe-benchmarking-cli all pass cargo check

bizinikiwi/pezframe/staking-async/src/tests/election_provider.rs

@@ -941,7 +941,7 @@ mod paged_on_initialize_era_election_planner {
 					]
 				);
 
-				// era progressed and electable stashes have been served to session pallet.
+				// era progressed and electable stashes have been served to session pezpallet.
 				assert_eq_uvec!(Session::validators(), vec![11, 21, 31]);
 
 				// 4. in the next era, the validator set does not include 31 anymore which was
@@ -1135,9 +1135,9 @@ mod paged_on_initialize_era_election_planner {
 	//             assert_eq!(Session::validators(), vec![21, 31, 71]);
 
 	//             // distribute reward,
-	// 	        Pallet::<Test>::reward_by_ids(vec![(21, 50)]);
-	// 	        Pallet::<Test>::reward_by_ids(vec![(31, 50)]);
-	// 	        Pallet::<Test>::reward_by_ids(vec![(71, 50)]);
+	// 	        Pezpallet::<Test>::reward_by_ids(vec![(21, 50)]);
+	// 	        Pezpallet::<Test>::reward_by_ids(vec![(31, 50)]);
+	// 	        Pezpallet::<Test>::reward_by_ids(vec![(71, 50)]);
 
 	//     		let total_payout = validator_payout_for(time_per_era());