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

pezcumulus/teyrchains/common/src/lib.rs

@@ -117,7 +117,7 @@ mod constants {
 		pezkuwi_primitives::MAX_POV_SIZE as u64,
 	);
 
-	/// Treasury pallet id of the local chain, used to convert into AccountId
+	/// Treasury pezpallet id of the local chain, used to convert into AccountId
 	pub const TREASURY_PALLET_ID: PalletId = PalletId(*b"py/trsry");
 }