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/session/src/historical/onchain.rs

@@ -22,7 +22,7 @@ use codec::Encode;
 use pezsp_runtime::traits::Convert;
 
 use super::{shared, Config as HistoricalConfig};
-use crate::{Config as SessionConfig, Pallet as SessionModule, SessionIndex};
+use crate::{Config as SessionConfig, Pezpallet as SessionModule, SessionIndex};
 
 /// Store the validator-set associated to the `session_index` to the off-chain database.
 ///