[Passkey, Portal] No way to distinguish multiple passkeys

ux/trivial

## Background:
- Device / Browser (OS version): Chrome on Mac
- Build: Version tag 2022-07-22.0

## Description:
No way to distinguish multiple passkeys in portal

## Steps to reproduce:
0. Use an app with passkey enabled.
1. Go to portal, Sign up a user with a passkey (e.g. Macbook Touch ID)
2. Go to Security, Passkey
3. Add a second passkey (from Android phone / Yubikey)
4. See there is no way distinguish multiple passkeys from the list

## Expected result:
Should have optional / automatic label text for passkey, like Macbook, Android, such that users can distinguish the passkeys from the list.

## Screenshot:

Start at the portal's Security > Passkey list described in the reproduction steps and trace how registered passkeys are displayed. Done means users can distinguish multiple passkeys, such as those from a Mac, Android phone, or YubiKey, in the list; no file or test is named in the issue.

Written by the indexing model from the issue text.