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/Cargo.toml

@@ -37,7 +37,7 @@ pezsp-state-machine = { optional = true, workspace = true, default-features = tr
 pezsp-version = { workspace = true }
 static_assertions = { workspace = true, default-features = true }
 trybuild = { features = ["diff"], workspace = true }
-# The "std" feature for this pallet is never activated on purpose, in order to test construct_runtime error message
+# The "std" feature for this pezpallet is never activated on purpose, in order to test construct_runtime error message
 test-pezpallet = { workspace = true }
 
 [features]