[Steam game server] should not mark service down if Steam API is down

⚠️ Please verify that this bug has NOT been raised before. • I checked and didn't find similar issue 🛡️ Security Policy • I agree to have read this project [Security Policy]( Description I monitor around 25+ game servers and when steam api goes for whatever reason (for example on Tuesdays when Steam has routine maintenance) all servers are marked down and produce incredible notification spam both when going down and up And just like that every Tuesday my phone explodes with 50+ notifications while everything is working 👟 Reproduction steps Monitor any steam game server and wait for Steam API to error out with code 502 or any other 👀 Expected behavior When Uptime Kuma can't check actual status of the service it should not mark the service down Possible solutions are: • Send 1 notification about Steam API down no matter how many monitors are using it • Fall back to a service port check 😓 Actual Behavior When Steam API goes down all s…