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/pezframe/support/test/tests/benchmark_ui.rs

@@ -27,7 +27,7 @@ fn benchmark_ui() {
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	std::env::set_var("SKIP_WASM_BUILD", "1");
 
-	// Deny all warnings since we emit warnings as part of a Pallet's UI.
+	// Deny all warnings since we emit warnings as part of a Pezpallet's UI.
 	std::env::set_var("CARGO_ENCODED_RUSTFLAGS", "--deny=warnings");
 
 	let t = trybuild::TestCases::new();