unigraph: legacy controller NameRegistered's cost is not mapped to Registration.base

[shrugs]

in unigraph/handlers/ensv1/RegistrarController.ts, the legacy 5-arg variant NameRegistered(string name, bytes32 label, address owner, uint256 cost, uint256 expires) doesn't map cost → baseCost in its arg re-mapping (the NameRenewed variants do), so handleNameRegisteredByController writes Registration.base = null for every legacy-controller registration. observed on a mainnet backfill: zero registrations with base set through mid-2021.

[coderabbitai]

🔗 Related PRs

#1744 - ENSv2 Plugin Events [merged]
#2049 - fix: drop zero-address placeholders, merge eth RegistrarControllers [merged]
#2073 - fix(ensindexer): handle non-UTF-8 label args in RegistrarController invariants [merged]

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