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/tips/src/benchmarking.rs

@@ -27,7 +27,7 @@ use pezframe_system::RawOrigin;
 use pezsp_runtime::traits::Saturating;
 
 use super::*;
-use crate::Pallet as TipsMod;
+use crate::Pezpallet as TipsMod;
 
 const SEED: u32 = 0;