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/teyrchain/pezpallets/template/src/mock.rs

@@ -5,7 +5,7 @@ use frame::{
 	testing_prelude::*,
 };
 
-// Configure a mock runtime to test the pallet.
+// Configure a mock runtime to test the pezpallet.
 #[frame_construct_runtime]
 mod test_runtime {
 	#[runtime::runtime]