Corpus Management Proof of Concept UI tweaks - Date Formats

#328475 (closed)

Swap out date format introduced in !57424 (diffs)

Plan

• Update Format in app/assets/javascripts/admin/users/constants.js to include YYYY-DD-MM format constant

• In app/assets/javascripts/vue_shared/components/user_date.vue add date format prop with validator

• Update unit tests