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/solochain/pezpallets/template/src/mock.rs

@@ -24,10 +24,10 @@ mod runtime {
 	pub struct Test;
 
 	#[runtime::pezpallet_index(0)]
-	pub type System = pezframe_system::Pallet<Test>;
+	pub type System = pezframe_system::Pezpallet<Test>;
 
 	#[runtime::pezpallet_index(1)]
-	pub type Template = pezpallet_template::Pallet<Test>;
+	pub type Template = pezpallet_template::Pezpallet<Test>;
 }
 
 #[derive_impl(pezframe_system::config_preludes::TestDefaultConfig)]