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/staking-score/src/benchmarking.rs

@@ -1,7 +1,7 @@
 //! Benchmarking setup for pezpallet-staking-score
 
 use super::*;
-use crate::{Config, Pallet, StakingStartBlock};
+use crate::{Config, Pezpallet, StakingStartBlock};
 use pezframe_benchmarking::v2::*;
 use pezframe_system::RawOrigin;