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/people/README.md

@@ -1,5 +1,5 @@
 # People System Chain
 
-The People Chain is a teyrchain to host the Identity pallet and serve as a location to which to
+The People Chain is a teyrchain to host the Identity pezpallet and serve as a location to which to
 migrate identity-related information from the Relay Chain. It is part of the implementation of
 [Fellowship RFC 32](https://github.com/polkadot-fellows/RFCs/blob/main/text/0032-minimal-relay.md).