System unavailable: dockerhost-azure-win2022-x64-4-intel

Machine is offline in jenkins as the machine is switched off in the Azure portal (likely done a few months ago to reduce costs). Since we have three active machines this is not a critical outage and we should consider whether to:

1. Bring it back to life and use it
2. Leave it off and fully deprovision it in Azure

Start by checking the dockerhost-azure-win2022-x64-4-intel status in Jenkins and its state in the Azure portal. Done means an agreed decision is recorded: either bring the machine back into use or leave it off and fully deprovision it, taking the other active machines into account.

Written by the indexing model from the issue text.