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

pezcumulus/teyrchains/pezpallets/identity-kyc/src/mock.rs

@@ -50,7 +50,7 @@ parameter_types! {
 pub struct MockOnKycApproved;
 impl crate::types::OnKycApproved<AccountId> for MockOnKycApproved {
 	fn on_kyc_approved(_who: &AccountId, _referrer: &AccountId) {
-		// No-op for tests - in real runtime this triggers referral pallet
+		// No-op for tests - in real runtime this triggers referral pezpallet
 	}
 }