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/election-provider-multi-block/src/mock/signed.rs

@@ -135,7 +135,7 @@ pub fn signed_events_since_last_call() -> Vec<crate::signed::Event<Runtime>> {
 	events.into_iter().skip(already_seen as usize).collect()
 }
 
-/// get the events of the verifier pallet.
+/// get the events of the verifier pezpallet.
 pub fn signed_events() -> Vec<crate::signed::Event<Runtime>> {
 	System::events()
 		.into_iter()
@@ -144,7 +144,7 @@ pub fn signed_events() -> Vec<crate::signed::Event<Runtime>> {
 		.collect::<Vec<_>>()
 }
 
-/// Load a signed solution into its pallet.
+/// Load a signed solution into its pezpallet.
 pub fn load_signed_for_verification(who: AccountId, paged: PagedRawSolution<Runtime>) {
 	let initial_balance = Balances::free_balance(&who);
 	assert_eq!(balances(who), (initial_balance, 0));