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/staking/CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes and migrations to pezpallet-staking will be documented in th
 
 The format is loosely based
 on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/). We maintain a
-single integer version number for staking pallet to keep track of all storage
+single integer version number for staking pezpallet to keep track of all storage
 migrations.
 
 ## [v16]