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/membership/src/benchmarking.rs

@@ -15,9 +15,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! Membership pallet benchmarking.
+//! Membership pezpallet benchmarking.
 
-use super::{Pallet as Membership, *};
+use super::{Pezpallet as Membership, *};
 use pezframe_benchmarking::v1::{account, benchmarks_instance_pallet, whitelist, BenchmarkError};
 use pezframe_support::{assert_ok, traits::EnsureOrigin};
 use pezframe_system::RawOrigin;