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/test/runtime/src/lib.rs

@@ -367,7 +367,7 @@ type ConsensusHook = pezcumulus_pezpallet_aura_ext::FixedVelocityConsensusHook<
 >;
 impl pezcumulus_pezpallet_teyrchain_system::Config for Runtime {
 	type WeightInfo = ();
-	type SelfParaId = teyrchain_info::Pallet<Runtime>;
+	type SelfParaId = teyrchain_info::Pezpallet<Runtime>;
 	type RuntimeEvent = RuntimeEvent;
 	type OnSystemEvent = ();
 	type OutboundXcmpMessageSource = ();