Validate sooner when the update is first offered and initiated
This check doesn't work here as a separate dcc is created for transfer
Add aggressive check before transfering userfile for compat
Merge branch 'streaming-userfile-aggressiveness' into next

* streaming-userfile-aggressiveness:
  Add aggressive check before transfering userfile for compat
  This check doesn't work here as a separate dcc is created for transfer
  Validate sooner when the update is first offered and initiated