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/pezpallets/presale/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "pezpallet-presale"
 version = "1.0.0"
-description = "PEZ token presale pallet - accepts wUSDT, distributes PEZ"
+description = "PEZ token presale pezpallet - accepts wUSDT, distributes PEZ"
 authors.workspace = true
 homepage.workspace = true
 edition.workspace = true