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/assets/asset-hub-zagros/src/staking.rs

@@ -13,7 +13,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-///! Staking, and election related pallet configurations.
+///! Staking, and election related pezpallet configurations.
 use super::*;
 use pezcumulus_primitives_core::relay_chain::SessionIndex;
 use pezframe_election_provider_support::{ElectionDataProvider, SequentialPhragmen};