[Lens] Show validation errors on dashboards

[flash1293]

In the Lens editor we are rendering a nice error message if there are inconsistencies in the state (e.g. if a field is not available)

In the embeddable, this logic is not used and it is attempted to run the expression. This results in slightly weird error messages:

In some cases (specifically on changing or disappearing fields) we could do better here and show the validation error message instead.

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[timroes]

This would most likely also be helping when changing a runtime field type that now creates an inconsistent state.

[flash1293]

@timroes yes, it would help with that situation as well - I checked the logic and it already catches type mismatches.

[wylieconlon]

This issue might be more important to fix now that we have more invalid states to support calculations.

[flash1293]

I agree @wylieconlon - it should also be a simple change.