In lokiless mode, it's easy to get in a situation where the desired query is incompatible with the possible prometheus queries. See screenshots & steps.
We should be able to improve that, for instance by automatically disabling the filters that are incompatible (and throwing a warning, because user needs to know that their query had to be adapted)

1. Install netobserv with Loki disabled
2. Go to topology with default filters (it works)
3. Move scope slider to "Node"

Error: Can't build query: this request could not be performed with Prometheus metrics, as they are missing some of the required labels. Try using different filters and/or aggregations. For example, try removing these dependencies from your query: K8S_FlowLayer. Alternatively, you may also install and enable Loki

We might run the same query except disabling the unavailable filters, here "layer", "dest. kind" and "source kind". In the UI, those filters should be automatically greyed out to show they have been disabled. A warning popup should tell that the filters were automatically disabled.