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/staking-async/runtimes/teyrchain/src/weights/pezpallet_multisig.rs

@@ -26,10 +26,10 @@
 // Executed Command:
 // target/production/pezkuwi-teyrchain
 // benchmark
-// pallet
+// pezpallet
 // --extrinsic=*
 // --chain=asset-hub-next-zagros-dev
-// --pallet=pezpallet_multisig
+// --pezpallet=pezpallet_multisig
 // --header=/__w/pezkuwi-sdk/pezkuwi-sdk/pezcumulus/file_header.txt
 // --output=./pezcumulus/teyrchains/runtimes/assets/asset-hub-next-zagros/src/weights
 // --wasm-execution=compiled