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

templates/minimal/runtime/Cargo.toml

@@ -28,7 +28,7 @@ serde_json = { workspace = true, default-features = false, features = [
   "alloc",
 ] }
 
-# local pallet templates
+# local pezpallet templates
 pezpallet-minimal-template = { workspace = true }
 
 [build-dependencies]