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/docs/overview.md

@@ -90,7 +90,7 @@ update will not be enacted directly; instead it takes `X` relay blocks (a value
 by the relay chain) before the relay chain allows the update to be applied. The first Teyrchain
 block that will be included after `X` relay chain blocks needs to apply the upgrade.
 If the update is applied before the waiting period is finished, the relay chain will reject the
-Teyrchain block for inclusion. The Pezcumulus runtime pallet will provide the functionality to
+Teyrchain block for inclusion. The Pezcumulus runtime pezpallet will provide the functionality to
 register the runtime upgrade and will also make sure that the update is applied at the correct block.
 
 After updating the Teyrchain runtime, a Teyrchain needs to wait a certain amount of time `Y`