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/nfts/src/features/metadata.rs

@@ -21,7 +21,7 @@ use crate::*;
 use alloc::vec::Vec;
 use pezframe_support::pezpallet_prelude::*;
 
-impl<T: Config<I>, I: 'static> Pallet<T, I> {
+impl<T: Config<I>, I: 'static> Pezpallet<T, I> {
 	/// Sets the metadata for a specific item within a collection.
 	///
 	/// - `maybe_check_origin`: An optional account ID that is allowed to set the metadata. If