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

pezkuwi/xcm/pezpallet-xcm-benchmarks/Cargo.toml

@@ -4,7 +4,7 @@ authors.workspace = true
 edition.workspace = true
 license.workspace = true
 version = "7.0.0"
-description = "Benchmarks for the XCM pallet"
+description = "Benchmarks for the XCM pezpallet"
 homepage.workspace = true
 repository.workspace = true
 documentation = "https://docs.rs/pezpallet-xcm-benchmarks"