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

pezkuwi/runtime/teyrchains/src/dmp/tests.rs

@@ -281,7 +281,7 @@ fn verify_fee_increase_and_decrease() {
 	new_test_ext(genesis).execute_with(|| {
 		register_paras(&[a]);
 
-		let initial = Pallet::<Test>::MIN_FEE_FACTOR;
+		let initial = Pezpallet::<Test>::MIN_FEE_FACTOR;
 		assert_eq!(DeliveryFeeFactor::<Test>::get(a), initial);
 
 		// Under fee limit
@@ -290,7 +290,7 @@ fn verify_fee_increase_and_decrease() {
 
 		// Limit reached so fee is increased
 		queue_downward_message(a, vec![1]).unwrap();
-		let result = Pallet::<Test>::MIN_FEE_FACTOR.saturating_mul(Dmp::EXPONENTIAL_FEE_BASE);
+		let result = Pezpallet::<Test>::MIN_FEE_FACTOR.saturating_mul(Dmp::EXPONENTIAL_FEE_BASE);
 		assert_eq!(DeliveryFeeFactor::<Test>::get(a), result);
 
 		Dmp::prune_dmq(a, 1);