Migrate off of findNodeHandle

[roryabraham]

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Problem

According to the official docs, we cannot turn on Fabric (RN new architecture) without first migrating away all uses of findNodeHandle

Solution

Migrate away from usages of findNodeHandle. We currently only have one in BaseOptionSelector here

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[melvin-bot]

Triggered auto assignment to @zanyrenney for Upwork job creation (chore: ContributorPlusReview), see https://stackoverflow.com/c/expensify/questions/13732 for more details.

[roryabraham]

ContributorPlusReview label didn't work here, so I'm manually tagging in @parasharrajat for review since he reviewed this code originally.