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

pezkuwi/xcm/src/v3/multilocation.rs

@@ -32,7 +32,7 @@ use scale_info::TypeInfo;
 /// - A (normal, layer-1) block chain, e.g. the Bitcoin mainnet or a teyrchain.
 /// - A layer-0 super-chain, e.g. the Pezkuwi Relay chain.
 /// - A layer-2 smart contract, e.g. an ERC-20 on Ethereum.
-/// - A logical functional component of a chain, e.g. a single instance of a pallet on a Frame-based
+/// - A logical functional component of a chain, e.g. a single instance of a pezpallet on a Frame-based
 ///   Bizinikiwi chain.
 /// - An account.
 ///