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

templates/minimal/runtime/README.md

@@ -4,7 +4,7 @@
 responsible for validating blocks and executing the state changes they define.
 
 💁 The runtime in this template is constructed using ready-made FRAME pallets that ship with
-[Pezkuwi SDK](https://github.com/pezkuwichain/pezkuwi-sdk), and a [template for a custom pallet](../pallets/README.md).
+[Pezkuwi SDK](https://github.com/pezkuwichain/pezkuwi-sdk), and a [template for a custom pezpallet](../pallets/README.md).
 
 👉 Learn more about FRAME
 [here](https://docs.pezkuwichain.io/sdk/master/polkadot_sdk_docs/polkadot_sdk/frame_runtime/index.html).