UserSync: Avoid UpdateLastSeenAt with invalid user ids (#72776)
* avoid user zero
* more errors
* more tests
* split
(cherry picked from commit 7431c0ddb1)
Co-authored-by: Ryan McKinley <ryantxu@gmail.com>
UserSync: Avoid UpdateLastSeenAt with invalid user ids (#72776)
* avoid user zero
* more errors
* more tests
* split
(cherry picked from commit 7431c0ddb1)
Co-authored-by: Ryan McKinley <ryantxu@gmail.com>