Explore new ways to coordinate operator actions for multi-cluster setup

[johscheuer]

What would you like to be added/changed?

With the support for multi-cluster coordination (https://github.com/FoundationDB/fdb-kubernetes-operator/pull/2259) we decided to implement a wait time to increase the probability that the different operator instances observe all changes. One of the drawbacks is that this might slow down single cluster operations, see: (https://github.com/FoundationDB/fdb-kubernetes-operator/pull/2259#discussion_r2027714639. We should explore different ways to track the state of the different operator instances.