The Observability operator should ensure that the Prometheus generation value is equal to the observedGeneration value before updating the MonitoringStack status.

Example:

• MonitoringStack object exists with generation=1 and observedGeneration = 1 (same for the underlying Prometheus object).
• User updates a MonitoringStack object -> MonitoringStack generation = 2, observedGeneration = 1
• OBO updates the underlying Prometheus object -> Prometheus generation =2, observedGeneration = 1
• OBO is notified because of the Prometheus change but Prometheus generation != observedGeneration so it does nothing.
• Prometheus operator reacts on the object change and updates the Prometheus status -> Prometheus generation =2, Prometheus observedGeneration = 2
• OBO is notified of the Prometheus change since Prometheus generation != observedGeneration -> MonitoringStack generation = 2, observedGeneration = 2