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/referral/src/tests.rs

@@ -1,12 +1,12 @@
 use crate::{
-	mock::*, pallet::ReferralInfo, Error, Event, PendingReferrals, ReferralCount, Referrals,
+	mock::*, pezpallet::ReferralInfo, Error, Event, PendingReferrals, ReferralCount, Referrals,
 	ReferrerStatsStorage,
 };
 use pezframe_support::{assert_noop, assert_ok};
 use pezpallet_identity_kyc::types::{OnCitizenshipRevoked, OnKycApproved};
 use pezsp_runtime::DispatchError;
 
-type ReferralPallet = crate::Pallet<Test>;
+type ReferralPallet = crate::Pezpallet<Test>;
 
 // ============================================================================
 // initiate_referral Tests