resource owners: Render username with display name to avoid confusion

[benbroadaway]

concord/console2/src/components/organisms/FindUserField2/index.tsx

Line 40 in b48162d

const renderTitle = (e: UserEntry) => (e.displayName ? e.displayName : e.name);

It's possible for multiple users (different usernames) to have the same display name. This can be a tad confusing in the UI when viewing at existing owners of resources. Some format like Display name (username) or Display Name - username should suffice.