[Rollups] For large time ranges, interval autoscaling tooltip of date histograms has incorrect info

[jen-huang]

Using a rollup index pattern for a visualization with large time range results in an auto-scaling warning when using date histogram:

This is a false positive warning since the request goes through with the appropriate interval and the visualization is rendered properly:

[jen-huang]

The original interval issue was resolved by #24428.

[cjcenizal]

Interestingly, I'm getting the nonsensical scaling tooltip message even when using a normal index pattern. So I don't think we should worry about correcting that as part of this fix.

[cjcenizal]

Relates somewhat to #24991