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/identity/README.md

@@ -1,6 +1,6 @@
 # pezpallet-identity
 
-## Identity Pallet
+## Identity Pezpallet
 
 - [`Config`]
 - [`Call`]
@@ -27,13 +27,13 @@ no state-bloat attack is viable.
 
 #### Usernames
 
-The pallet provides functionality for username authorities to issue usernames, which are independent
+The pezpallet provides functionality for username authorities to issue usernames, which are independent
 of the identity information functionality; an account can set:
 - an identity without setting a username
 - a username without setting an identity
 - an identity and a username
 
-The username functionality implemented in this pallet is meant to be a user friendly lookup of
+The username functionality implemented in this pezpallet is meant to be a user friendly lookup of
 accounts. There are mappings in both directions, "account -> username" and "username -> account".
 
 To grant a username, a username authority can either: