user record changes for getAccountInfo()

[pragatimodi]

Since PasskeyInfo is only enrolled via client SDK for the users and we can only GET enrolled passkeys, integration testing is not possible here. Manually tested

getAuth().getUser(<UID>).then((user) => console.log(user.passkeyInfo));

for a user with enrolled passkeys printed :

passkeyInfo: [
    PasskeyInfo {
      name: 'Unnamed account (Web)',
      credentialId: '<CREDENTIALS>',
      displayName: ''
    }
  ]