* Remove Organization.FlexibleCollections from code * Drop Organization.FlexibleCollections column in EF databases (MSSQL column to be retained for 1 additional deployment to support rollback in cloud)
* Remove FlexibleCollections checks from Public API controllers * Remove AccessAll from Public API * Update tests
* feat: remove required for AccessAll and add xmldoc for usage restrictions, refs AC-1880 * feat: add validation for create group workflow wrt manage property, refs AC-1880 * feat: add validation for update group workflow wrt manage property, refs AC-1880 * feat: add validation for create and update member workflow wrt manage property, refs AC-1880 * feat: add validation for update collection workflow wrt manage property, refs AC-1880 * fix: flaky Public/GroupsControllerTests + more test coverage, refs AC-1880
* move Organization.cs files to AC Team code ownership
