UI: VM's on crashed node show as running

##### ISSUE TYPE

* Bug Report

##### COMPONENT NAME

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UI
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##### CLOUDSTACK VERSION

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4.18.1.0
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##### CONFIGURATION

N/A

##### OS / ENVIRONMENT

N/A

##### SUMMARY

When a kvm node crashes (no maintenance) the VM's running on that node will still show the status "Running" in the dashboard.
When accessing the VM itself you get the error message:
`The Control Plane Status of this instance is Offline. Some actions on this instance will fail, if so please wait a while and retry.`
When the kvm node restarts, after some time the VM's on it will show as "Stopped" and will have to be started manually.

##### STEPS TO REPRODUCE

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Force reboot without maintenance a kvm node that run's compute resources
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##### EXPECTED RESULTS

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I would expect the VM's to show as Stopped/Crashed as soon as the kvm node goes down
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##### ACTUAL RESULTS

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VM looks as running:
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VM details says there is an issue with control plane:
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Node is offline:
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Commencez dans les vues dashboard et détails de VM, en reproduisant le problème en redémarrant de force un nœud KVM sans maintenance. Suivez la manière dont l’état hors ligne du plan de contrôle se reflète dans l’état de la VM ; c’est terminé lorsque les VM concernées affichent rapidement Stopped ou Crashed et restent cohérentes après le redémarrage du nœud.

Rédigé par le modèle d'indexation à partir du texte de l'issue.