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/runtimes/bridge-hubs/test-utils/src/test_data/mod.rs

@@ -47,7 +47,7 @@ pub fn prepare_inbound_xcm(xcm_message: Xcm<()>, destination: InteriorLocation)
 }
 
 /// Helper that creates InitializationData mock data, that can be used to initialize bridge
-/// GRANDPA pallet
+/// GRANDPA pezpallet
 pub fn initialization_data<
 	Runtime: pezpallet_bridge_grandpa::Config<GrandpaPalletInstance>,
 	GrandpaPalletInstance: 'static,