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/pezpallets/collective-content/src/tests.rs

@@ -54,7 +54,7 @@ fn set_charter_works() {
 #[test]
 fn announce_works() {
 	new_test_ext().execute_with(|| {
-		let now = pezframe_system::Pallet::<Test>::block_number();
+		let now = pezframe_system::Pezpallet::<Test>::block_number();
 		// wrong origin.
 		let origin = RuntimeOrigin::signed(SomeAccount::get());
 		let cid = create_cid(1);