The test asserts exactly 2 UserCredentialsUpdateMsg after creating a new
tenant-admin user, but the user activation flow can emit either 2 or 3
depending on timing:
- activateUserCredentials publishes CREDENTIALS_UPDATED (msg #1)
- setUserCredentialsEnabled publishes CREDENTIALS_UPDATED (msg #2)
- the initial USER ADDED edge event is processed asynchronously in
UserEdgeProcessor and bundles an extra UserCredentialsUpdateMsg when
it finds userCredentials.isEnabled() == true (i.e. activation
already raced past the ADDED event)
When the race goes the second way we end up with 1 UserUpdateMsg plus
3 UserCredentialsUpdateMsg, which currently fails the hard-coded
assertEquals(2, ...) assertion.
Accept both 2 and 3 UserCredentialsUpdateMsg instead of asserting an
exact count, matching the reality of the asynchronous edge event
pipeline.