For #28343
Connects to #28343
Removing Apple MDM profile validation checks for com.apple.MCX keys
(dontAllowFDEDisable and dontAllowFDEEnable) due to customer feedback.
# Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
- [x] Added/updated automated tests
- [x] Manual QA for all new/changed functionality