`updateCustomBenefit` does not update BenefitDetail on related Screener

[Justin-MacIntosh]

Bug

• Currently, updates to Custom Benefit fields such as name or description via updateCustomBenefit(...) do not also change the same fields on the corresponding BenefitDetail.

Notes

• The purpose of having BenefitDetails on the Screener model is to allow us to get the name/descriptions of Custom Benefits related to a Screener quickly without having to individually query for each one. This allows the List page for Custom Benefits in a Screener to load more quickly than it otherwise would.
• It may be worth examining if there is a feature or strategy we can leverage to maintain this speed without having two sources of truth for fields like Custom Benefit name/description that need to be kept in-sync.