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

pezcumulus/teyrchains/integration-tests/emulated/tests/coretime/coretime-pezkuwichain/src/tests/coretime_interface.rs

@@ -128,7 +128,7 @@ fn transact_hardcoded_weights_are_sane() {
 
 	let config = CoretimePezkuwichain::ext_wrapper(|| {
 		Configuration::<<CoretimePezkuwichain as Chain>::Runtime>::get()
-			.expect("Pallet was configured earlier.")
+			.expect("Pezpallet was configured earlier.")
 	});
 
 	// Now run up to the block before the sale is rotated.

pezcumulus/teyrchains/integration-tests/emulated/tests/coretime/coretime-zagros/src/tests/coretime_interface.rs

@@ -127,7 +127,7 @@ fn transact_hardcoded_weights_are_sane() {
 
 	let config = CoretimeZagros::ext_wrapper(|| {
 		Configuration::<<CoretimeZagros as Chain>::Runtime>::get()
-			.expect("Pallet was configured earlier.")
+			.expect("Pezpallet was configured earlier.")
 	});
 
 	// Now run up to the block before the sale is rotated.