Register domain Arbitrum L1

[pikonha]

Register domain Arbitrum L1

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Description

Fix the domain registration on L1 Resolver:

• fix register domain that was setting the parent namehash as the target
• taking ENS ownership in consideration when registering a new domain

Changes

• New feature implementation
• Bug fix
• Code refactoring
• Documentation update
• Other (please specify)

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you successfully run tests with your changes locally?