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/utils/wasm-builder/src/metadata_hash.rs

@@ -119,7 +119,7 @@ fn extract_ss58_prefix(metadata: &RuntimeMetadata) -> u16 {
 		.pallets
 		.iter()
 		.find(|p| p.name == "System")
-		.expect("Each FRAME runtime has the `System` pallet; qed");
+		.expect("Each FRAME runtime has the `System` pezpallet; qed");
 
 	system
 		.constants