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

docs/sdk/packages/guides/first-pezpallet/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pezkuwi-sdk-docs-first-pezpallet"
-description = "A simple pallet created for the pezkuwi-sdk-docs guides"
+description = "A simple pezpallet created for the pezkuwi-sdk-docs guides"
 version = "0.0.0"
 license = "MIT-0"
 authors.workspace = true