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/beefy-mmr/src/weights.rs

@@ -44,10 +44,10 @@
 // frame-omni-bencher
 // v1
 // benchmark
-// pallet
+// pezpallet
 // --extrinsic=*
 // --runtime=target/production/wbuild/pez-kitchensink-runtime/pez_kitchensink_runtime.wasm
-// --pallet=pezpallet_beefy_mmr
+// --pezpallet=pezpallet_beefy_mmr
 // --header=/__w/pezkuwi-sdk/pezkuwi-sdk/bizinikiwi/HEADER-APACHE2
 // --output=/__w/pezkuwi-sdk/pezkuwi-sdk/bizinikiwi/pezframe/beefy-mmr/src/weights.rs
 // --wasm-execution=compiled