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/pezpallets/teyrchain-system/src/weights.rs

@@ -25,10 +25,10 @@
 // Executed Command:
 // ./target/release/pezkuwi-teyrchain
 // benchmark
-// pallet
+// pezpallet
 // --chain
 // westmint-dev
-// --pallet
+// --pezpallet
 // pezcumulus_pezpallet_teyrchain_system
 // --extrinsic
 // *