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/ranked-collective/src/tests.rs

@@ -130,7 +130,7 @@ impl Polling<TallyOf<Test>> for TestPolls {
 			Some(Ongoing(..)) => {},
 			_ => return Err(()),
 		}
-		let now = pezframe_system::Pallet::<Test>::block_number();
+		let now = pezframe_system::Pezpallet::<Test>::block_number();
 		polls.insert(index, Completed(now, approved));
 		Polls::set(polls);
 		Ok(())