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/primitives/npos-elections/src/lib.rs

@@ -481,7 +481,7 @@ pub struct ElectionResult<AccountId, P: PerThing> {
 ///
 /// This complements the [`ElectionResult`] and is needed to run the balancing post-processing.
 ///
-/// This, at the current version, resembles the `Exposure` defined in the Staking pallet, yet they
+/// This, at the current version, resembles the `Exposure` defined in the Staking pezpallet, yet they
 /// do not necessarily have to be the same.
 #[derive(RuntimeDebug, Encode, Decode, DecodeWithMemTracking, Clone, Eq, PartialEq, TypeInfo)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]