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/client/offchain/src/lib.rs

@@ -340,7 +340,7 @@ mod tests {
 	use std::{collections::HashSet, sync::Arc};
 	use bizinikiwi_test_runtime_client::{
 		runtime::{
-			bizinikiwi_test_pallet::pallet::Call as PalletCall, ExtrinsicBuilder, RuntimeCall,
+			bizinikiwi_test_pallet::pezpallet::Call as PalletCall, ExtrinsicBuilder, RuntimeCall,
 		},
 		ClientBlockImportExt, DefaultTestClientBuilderExt, TestClientBuilderExt,
 	};