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/bridge-hub-pezkuwichain/src/weights/pezpallet_utility.rs

@@ -25,10 +25,10 @@
 // frame-omni-bencher
 // v1
 // benchmark
-// pallet
+// pezpallet
 // --extrinsic=*
 // --runtime=target/production/wbuild/pezbridge-hub-pezkuwichain-runtime/pezbridge_hub_pezkuwichain_runtime.wasm
-// --pallet=pezpallet_utility
+// --pezpallet=pezpallet_utility
 // --header=/__w/pezkuwi-sdk/pezkuwi-sdk/pezcumulus/file_header.txt
 // --output=./pezcumulus/teyrchains/runtimes/bridge-hubs/bridge-hub-pezkuwichain/src/weights
 // --wasm-execution=compiled