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/contracts/src/test_utils/builder.rs

@@ -19,7 +19,7 @@ use super::GAS_LIMIT;
 use crate::{
 	AccountIdLookupOf, AccountIdOf, BalanceOf, Code, CodeHash, CollectEvents, Config,
 	ContractExecResult, ContractInstantiateResult, DebugInfo, Determinism, EventRecordOf,
-	ExecReturnValue, InstantiateReturnValue, OriginFor, Pallet, Weight,
+	ExecReturnValue, InstantiateReturnValue, OriginFor, Pezpallet, Weight,
 };
 use codec::{Encode, HasCompact};
 use core::fmt::Debug;
@@ -64,7 +64,7 @@ macro_rules! builder {
 
 			#[doc = concat!("Build the ", stringify!($method), " call")]
 			pub fn build(self) -> $result {
-				Pallet::<T>::$method(
+				Pezpallet::<T>::$method(
 					$(self.$field,)*
 				)
 			}