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If the SUT gets rebooted between snapshot creation and rollback, console state will not be properly restored and select_console() will fail in some cases because it'll try to log in when the user is already logged in since before the snapshot:
https://openqa.suse.de/tests/8545133#step/select_console#1/2

Steps to reproduce:

1. Activate 2 or more consoles
2. Create snapshot
3. Reboot SUT and call wait_boot() (reset_consoles() will be called by wait_boot() here)
4. Activate the same consoles again (all of them will be added to $autotest::last_milestone->{activated_consoles} due to reset_consoles() above)
5. Trigger snapshot rollback
6. Select any console activated in step 1 except the one that was selected during snapshot creation

If the console selected in the last step expects login prompt on first activation and then keeps the session open even while not selected, it'll fail to activate after snapshot rollback. The console session was left open in the snapshot but the test backend will wrongly believe that it's closed due to steps 3 and 4 causing another console reset during snapshot rollback.