[Lens] Suppress missing index toast

[stratoula]

Describe the feature:
In order to be aligned with Discover #149625, Lens should also suppress the missing index toast and show a useful error message instead

Describe a specific use case for the feature:
Implementation: #149625 (comment)

[elasticmachine]

Pinging @elastic/kibana-visualizations @elastic/kibana-visualizations-external (Team:Visualizations)

[drewdaemon]

Technical guidance from @kertal: #149625 (comment)

[stratoula]

I was thinking about it, the good news are that with @drewdaemon's changes I don't see the toast anymore:

We see no results, exactly as Discover which was the point. Discover has a better no results page but I don't think we want to change this. The only thing we could do is instead of the error about the fields missing we could show something else but I am not sure if we can identify the reason of the erroring.

@drewdaemon thoughts?

[drewdaemon]

I think what the current issue was going to cover was

1. removing the toast (done)
2. showing some message or icon about there being no matching index

Now that the toasts are removed, I think we can close this in favor of #151526.

The only thing we could do is instead of the error about the fields missing we could show something else but I am not sure if we can identify the reason of the erroring.

We can by checking dataView.matchingIndices.length