Migrate Interop upgrade transactions to NUT bundle

Interop currently uses the legacy hardcoded upgrade transaction pattern (`InteropNetworkUpgradeTransactions()`). It should be migrated to use the NUT bundle approach introduced in the Karst fork, so that its upgrade gas is also accounted for in the block gas limit via `upgradeGas`.

Context: https://github.com/ethereum-optimism/optimism/pull/19220